4140 Q&T

Alro delivers...everyday Alloys ETD 150®.......................................................................................8-2 ETD 150® Rounds..........................................................................8-2 AISI 4140/41L40 - Annealed..........................................................8-3 AISI 4140 - Annealed Flats And Squares........................ 8-4 thru 8-5 AISI 4140 - Annealed Rounds......................................... 8-5 thru 8-6 AISI 4140 HR Q&T........................................................................8-7 AISI 4140 Rounds HR Q&T...........................................................8-7 AISI 4140 and 41L40* Annealed CF Rounds ...............................8-8 AISI 4140/4142 CF Q&T................................................................8-8 AISI 4140 Q&T TG&P....................................................................8-9 AISI 4140 Annealed CF Squares...................................................8-9 AISI 4140 Annealed CF Hexagons................................................8-9 AISI 4140 Annealed CF Flats......................................................8-10 AISI 4140/4142 - (MOD).............................................................. 8-11 AISI 4140/4142 - (MOD) Flats And Squares............... 8-12 thru 8-14 AISI 4140 - As Rolled Plate.........................................................8-15 AISI 4150 Hot Rolled Annealed...................................................8-16 AISI 4150 Hot Rolled Annealed Rounds......................................8-16 AISI 4150R Q&T SR....................................................................8-17 AISI 4150R Q&T SR Rounds.......................................................8-18 4150 DYBAR - (MOD) RS...........................................................8-19 4150 DYBAR - (MOD) RS Flats...................................................8-19 AISI 4340 - Annealed Q&T..........................................................8-20 AISI 4340 - Annealed Rounds.....................................................8-21 AISI 4340 - HR Q&T Rounds.......................................................8-21 AISI 6150 - Annealed...................................................................8-22 AISI 6150 - Annealed Flats And Squares.................... 8-23 thru 8-24 AISI 6150 - Annealed Rounds.....................................................8-25 AISI 8620/86L20..........................................................................8-26 AISI 8620 Flats And Squares ..................................... 8-27 thru 8-28 AISI 8620 HR Rounds.................................................................8-29 AISI 8620 CF Rounds..................................................................8-29 AISI 86L20 CF Rounds................................................................8-30 AISI 8620 Plate............................................................................8-30 AISI 52100...................................................................................8-30 AISI 52100 Rounds.....................................................................8-31 Alro Brake Die.............................................................................8-32 KPM SUPER SQUARE...............................................................8-33 TOLERANCES Hot Rolled Alloy Bars...........................................................8-34 Size Tolerances - Rounds....................................................8-34 DCF Thickness and Width...................................................8-34 Thickness Tolerances - 4140 HRA and 8620 HR Flats........8-35 Standard Manufacturing Cold Finished Bars.......................8-35 8-1 Alro delivers...everyday ETD 150® E.T.D. 150® stands for Elevated Temperature Drawing process. This eliminates heat treating and secondary operations such as straightening, finish grinding, cleaning and inspections. It can be roll threaded, knurled, and plated. TYPICAL ANALYSIS ETD 150® Carbon (C) .40 Min Manganese (Mn) .70/1.10 Silicon (Si) .15/.35 Chromium (Cr) .80/1.20 Molybdenum (Mo) .15/.25 MECHANICAL PROPERTIES Tensile Strength.................................................................. **150,000 psi Min Yield Strength (.2% offset)......................................................130,000psi Min Elongation...................................................................................10% (Mean) Reduction of Area........................................................................37% (Mean) Machinability............................................................................... 75% of 1212 Rockwell C Hardness........................................................................**32 Min Brinell Hardness..............................................................................**302 Min *ETD 150® contains additives for improving machinability. These may be Tellurium, Selenium, Sulphur (.06 max), or others, separately or in combination. **In the event of disagreement between hardness and tensile strength, the tensile strength shall govern. ETD 150® ROUNDS Size in Inches 1/2 9/16 5/8 11/16 3/4 13/16 7/8 1 1-1/16 1-1/8 1-3/16 1-1/4 1-3/8 1-1/2 1-5/8 1-3/4 Pounds Pounds per ft per 12 ft 0.670 0.850 1.040 1.260 1.500 1.760 2.040 2.670 3.014 3.379 3.770 4.170 5.050 6.010 7.050 8.170 8.04 10.20 12.48 15.12 18.00 21.12 24.48 32.04 36.17 40.55 45.24 50.04 60.60 72.12 84.60 98.04 Size in Inches 1-7/8 2 2-1/8 2-1/4 2-3/8 2-1/2 2-5/8 2-3/4 2-7/8 3 3-1/4 3-3/8 3-1/2 Pounds Pounds per ft per 12 ft 9.390 10.680 12.06 13.52 15.06 16.69 18.40 20.19 22.07 24.03 28.21 30.42 32.71 112.68 128.16 144.72 162.24 180.72 200.28 220.80 242.28 264.84 288.36 338.52 365.04 392.49 Visit the Alro Web Site www.alro.com alro.com 8-2 alro.com Alro delivers...everyday AISI 4140/41L40 - ANNEALED HR (ALSO AVAILABLE IN DCF) This medium carbon alloy grade is widely used for many general purpose parts requiring high tensile strength and toughness. 4140 contains chromium and molybdenum as alloying elements and may be heat treated over a wide range to give the combined advantages of proper hardness, strength and ductility. In conditions where localized hardness may be required, this steel is readily flame or induction hardened. TYPICAL ANALYSIS Carbon (C) Manganese (Mn) Silicon (Si) Molybdenum (Mo) Chromium (Cr) Phosphorus (P) Sulphur (S) *Lead FORGING (a) Start forging at Do not forge below NORMALIZING (b) (871-899º C) ANNEALING (c) Temperature Rate of cooling, max. per hour Typical annealed hardness, Brinell HARDENING Rate of heating Preheat temperature Hardening temperature Time at temperature, minutes Quenching medium WEAR RESISTANCE TOUGHNESS RESISTANCE TO SOFTENING EFFECT OF ELEVATED TEMPERATURE DEPTH OF HARDENING MACHINABILITY GRINDABILITY DISTORTION IN HEAT TREATING SAFETY IN HARDENING RESISTANCE TO DECARBURIZATION AISI 4140/41L40 .38/.43 .75/1.00 .15/.30 .15/.25 .80/1.10 .035 MAX .040 MAX .15/.35 2000-2200º F (1100-1200º C) 1800º F (980º C) 1600-1650º F 1500-1550º F (816-843º C) 212 Slowly 1500-1550º F (816-843º C) 0 (I) Medium Very High Low Medium Medium High Medium Low Medium •Refer to pages 14-24 thru 14-25 for notes (a) to (o), incI., explanation of letter 0, A, S, B and W. *Applies only to 4140 leaded alloy steel bars. Visit the Alro Web Site www.alro.com alro.com alro.com 8-3 •Sizes not listed above can be cut from plate.551 28.461 8 41.252 1.028 20 69.879 8.801 3.141 4.681 12.471 6.349 2.809 10.198 13.321 7.141 2.796 2.092 11.667 6.795 5 21.530 8.813 42.449 6.351 15.147 3.935 1. 8-4 HR Continued on next page  .220 6.ANNEALED SIZE CHART FLATS AND SQUARES (Cut From Plate) Size (inches) Pounds (per ft.065 8.344 2.561 5/8 x 2 -1/4 2 -1/2 2 -3/4 3 3 -1/2 4 4 -1/2 5 6 8 10 12 16 20 24 3/4 x 3/4 1 1 -1/4 1 -1/2 1 -3/4 2 2 -1/4 2 -1/2 2 -3/4 3 3 -1/2 4 4 -1/2 5 6 8 10 12 16 20 24 1 x 1 1 -1/8 1 -1/4 1 -1/2 1 -3/4 2 2 -1/4 2 -1/2 2 -3/4 3 3 -1/2 (ALSO AVAILABLE IN DCF) Pounds Size Pounds (per ft.934 1-1/4 x 1 -1/4 5.757 7.008 4.834 22.702 2 -1/4 11.594 3 15.849 5.) (inches) (per ft.878 1-3/4 x 1 -3/4 10.114 5.146 8 28.658 6 21.985 10.827 4. Actual weights may vary.081 4 -1/2 23.455 4.410 17.902 3.773 7.594 0.304 8 34.everyday AISI 4140 ..713 12.937 9.779 5.024 5.406 1-1/2 x 1 -1/2 8.076 16 56.119 24 124.694 20 87.098 6.988 21.530 44.991 1.227 2.446 1.296 2 -3/4 14.Alro delivers.682 35.126 2.618 14.862 2 8.684 4.099 12 42.263 26.120 4.227 1.697 35.460 4.117 2 -3/4 12.032 13.786 2.076 9.844 42..106 2 10.577 5.271 6 31.947 2 -1/4 10.451 1.395 10.359 20 104.032 2 -1/2 11.237 3.) Size (inches) 3/8 x 3/8 1/2 5/8 3/4 1 1 -1/4 1 -1/2 1 -3/4 2 2 -1/4 2 -1/2 2 -3/4 3 3 -1/2 4 6 1/2 x 1/2 5/8 3/4 1 1 -1/4 1 -1/2 1 -3/4 2 2 -1/4 2 -1/2 2 -3/4 3 3 -1/2 4 4 -1/2 5 6 7 8 10 12 16 20 24 5/8 x 5/8 3/4 1 1 -1/4 1 -1/2 1 -3/4 2 0.982 10 43.438 6.050 24 104.897 2.791 3.456 4 17.123 10 35.463 3.831 12.538 31.378 53.404 17.) 5.257 26.486 4 21.978 21. •Weights above include nominal oversize tolerance.257 8.201 3 13.660 12 52.193 8.999 2 -1/2 13.467 2.105 1.577 5.363 52.704 4.131 4.338 16 69.625 4 -1/2 19.964 6 26.600 16 83.676 5 26.044 10.169 4 -1/2 15.520 1.151 9.286 3 -1/2 15.765 0.004 1.945 •Refer to pages 8-34 thru 8-35 for alloy tolerances.692 1 -1/2 6.913 63.425 1 x 4 14.221 12 62.364 7.417 8.841 10 52.168 4.914 5 17.807 3.981 24 83.488 3.778 1 -3/4 7.891 3 -1/2 18. 438 34.353 206.394 206.199 137.578 31.234 13.522 36.730 48.724 20.609 34.465 288.934 62.498 47.804 110.510 120.557 30.463 8-5 .040 2.015 24.025 121.781 72.795 52.822 17.409 26.532 247.700 60.862 97.ANNEALED ROUNDS SIZE CHART Diameter (inches) 5/8 3/4 7/8 1 1-1/8 1-1/4 1-3/8 Pounds (per ft.257 69.210 15.955 82.202 43.) 21.106 75.704 Diameter (inches) 2-3/8 2-1/2 2-5/8 2-3/4 2-7/8 3 3-1/8 Pounds (per ft.350 14.680 12.497 24.533 22.996 103.258 16.495 192.480 240.537 27. Sizes not listed above can be cut from plate.676 3.776 55.656 19.102 24.476 18.771 23.993 31.172 9.836 Size (inches) 2-1/4 x 2 -3/4 3 3 -1/2 4 4 -1/2 5 5 -1/2 6 8 10 12 16 20 24 2-1/2 x 2 -1/2 2 -3/4 3 3 -1/2 4 4 -1/2 5 5 -1/2 6 8 10 12 16 20 24 3 x 3 3 -1/2 4 4 -1/2 Pounds (per ft.384 4.523 60.521 66.326 165.366 •Refer to pages 8-34 thru 8-35 for alloy tolerances.547 27.782 274..342 83.022 172.188 145.670 41.ANNEALED SIZE CHART HR FLATS AND SQUARES (ALSO AVAILABLE IN DCF) (Cut From Plate) Size (inches) 1-3/4 x 2 2 -1/2 3 4 4 -1/2 5 6 8 10 12 16 20 24 2 x 2 2 -1/4 2 -1/2 2 -3/4 3 3 -1/2 4 4 -1/2 5 6 8 9 10 12 16 20 24 2-1/4 x 2 -1/4 2 -1/2 Pounds (per ft.905 39.174 165.277 86.500 2.) 1.964 Size (inches) 3 x 5 6 8 10 12 16 20 24 3-1/2 x 3 -1/2 4 4 -1/2 5 5 -1/2 6 8 10 12 16 20 24 4 x 4 4 -1/2 5 5 -1/2 6 8 10 12 16 20 24 Pounds (per ft.991 219.091 69.464 103.426 24.707 27.903 93.379 21.451 69.312 30.650 138.125 110.176 5.449 35.767 31.933 17.595 164.817 46.384 10.896 18.056 8.525 54.044 1.Alro delivers.) 6.900 19.) 15.164 26.408 62.723 72.) 12.885 41.418 77.559 62.690 138.518 96.012 7.) 52.257 165.502 144.823 22.387 124..574 329.578 36.619 48.052 Diameter (inches) 1-1/2 1-5/8 1-3/4 1-7/8 2 2-1/8 2-1/4 HR (ALSO AVAILABLE IN DCF) Pounds (per ft.112 62.406 82. AISI 4140 .063 46.451 55.711 42.357 155.191 43.320 39.585 124.456 15.everyday AISI 4140 . 856 880.725 •Refer to pages 8-34 thru 8-35 for alloy tolerances.everyday AISI 4140 .939 54.310 654.741 258.665 462.458 330.816 233..139 979.779 143.631 174.397 153.348 163.203 98..584 427.243 67.822 61.985 HR (ALSO AVAILABLE IN DCF) Diameter (inches) Pounds (per ft.251 185.175 43.928 90.078 133.100 245.753 301. Stock lengths 12' (20' randoms available in most sizes).692 38.047 573.804 74.) 123.918 535.Alro delivers.606 30. forged and roughturned.170 208.) Diameter (inches) 11-1/2 12 12-1/2 13 13-1/2 14 14-1/2 15 15-1/2 16 17 18 19 20 360.913 785.204 197.874 392.699 81.143 35.390 114.com 8-6 (888) 888-ALRO 2 5 7 6 .444 696. *Sizes above 12" are 16-20' randoms. Alro Steel Metals • Industrial Supplies • Plastics Ask your Alro Sales Representative about our Processing Services • Saw Cutting • Flame Cutting • Production/Precision Sawing • Water Jet • Precision Aluminum Plate Sawing • Plate Laser • Press Brake/Forming • Tube Laser • Thermal Processing • Shearing • Plasma • Grinding Contact us today and learn more about The Alro Difference! alro.394 48.ANNEALED ROUNDS SIZE CHART Diameter (inches) Pounds (per ft.762 1084.498 6-3/4 7 7-1/4 7-1/2 7-3/4 8 8-1/4 8-1/2 8-3/4 9 9-1/4 9-1/2 9-3/4 10 10-1/2 11 Pounds (per ft.818 220.511 613.) 3-1/4 3-3/8 3-1/2 3-5/8 3-3/4 4 4-1/4 4-1/2 4-3/4 5 5-1/4 5-1/2 5-3/4 6 6-1/4 6-1/2 28.833 33.716 273.146 106.124 497. 204 8-1/2 197. Sizes thru 7" comply with the chemical and mechanical properties of ASTM-A193-B7.724 20.699 81. Stock lengths 20' randoms Bars over 10-1/2" diameter are forged.939 54.379 4. and ductility.Alro delivers.10 Silicon (Si) ..310 16 696.394 48.725 22 1310.234 13.) (inches) 8 174.779 143.170 5.918 14 535.49 Manganese (Mn) .348 163.928 90.20 Vanadium (V) Sulphur (S) .741 10 273.243 67.390 114.75/1.409 Diameter (inches) 3-1/4 3-1/2 3-3/4 4 4-1/4 4-1/2 4-3/4 5 5-1/4 5-1/2 5-3/4 6 6-1/4 6-1/2 6-3/4 7 7-1/4 7-1/2 7-3/4 Pounds (per ft. 4 toughness.everyday AISI 4140 Q&T (Hot Rolled.633 Pounds Diameter (per ft.035 MAX HEAT TREATMENT Quenched from 1525ºF (828ºC) MIN Tempered at 1100ºF (593ºC) MIN Quenching medium O (I) TENSILE STRENGTH approx.498 11-1/2 360.533 22.65/1.000 lbs psi YIELD POINT approx.251 8-1/4 185.25 Chromium (Cr) .258 16. 8-7 .15/.896 18.139 20 1084.387 10.175 43.985 123. 85. strength.047 15 613.753 10-1/2 301.670 3.816 9-1/2 245.584 13 462.124 13-1/2 497.143 38.180 9.203 98.040 2.822 61.30 Tungsten (W) Molybdenum (Mo) ..078 133. TYPICAL ANALYSIS AISI 4150 Carbon (C) .010 7.680 12.671 •Refer to pages 8-34 thru 8-35 for alloy tolerances.37/.000 lbs psi BRINELL HARDNESS 269-321 ROCKWELL C 28-32 ELONGATlON IN 2" 16% REDUCTION IN AREA 50% HR Q&T AISI 4140 ROUNDS Diameter (inches) 3/4 7/8 1 1-1/8 1-1/4 1-3/8 1-1/2 1-5/8 1-3/4 1-7/8 2 2-1/8 2-1/4 2-3/8 2-1/2 2-5/8 2-3/4 2-7/8 3 Pounds (per ft.874 12 392. Quenched and Tempered) 140 HR Q&T is a general purpose alloy with good hardness penetration.) 28.048 6.040 MAX Phosphorus (P) .704 15.450 11 330.178 9 220.146 106.426 24.500 2.804 74.15/.606 33.) 1.397 153.050 8. 110. Sizes over 7" to 9-1/2" conform to ASTM A434.913 18 880. Stock lengths 12' (20' available in most sizes).com .060 16.177 9.) 1.517 16.500 2.192 Diameter (inches) 3 3-1/2 3-3/4 4 5 6 Pounds (per ft.) 15.670 3.519 7.261 0.720 48.720 66. AISI 4140/4142 CF Q&T ROUNDS SIZE CHART COLD FINISH 4140/4142 CF Q&T SR is a general purpose alloy used where substantial strength. quenching and the coldfinishing process.708 37.845 1.379 4. better fatigue resistance and superior surface condition. improved toughness.680 12.057 13.alro..Alro delivers.177 9.050 8.172 4.763 2.044 2.030 32.15/.668 0.547 42.600 5.048 5. toughness and hardness are required.688 20.398 20.com 8-8 alro.100 0.044 2.510 0.069 24. Through tempering.) 3/16 1/4 5/16 3/8 7/16 1/2 9/16 5/8 11/16 3/4 13/16 7/8 15/16 1 1-1/16 0.202 32.387 10. Stock lengths 12' randoms Visit the Alro Web Site www.) 24.172 5.192 22.com alro.170 0.261 1.043 1. 4140 CF Q&T SR Rounds are also calcium-treated for improved machinability and fully stress relieved after drawing so that distortion during machining is held to a minimum.everyday AISI 4140 AND 41L40* ROUNDS SIZE CHART Diameter (inches) Pounds (per ft.750 •Refer to pages 8-34 thru 8-35 for alloy tolerances.517 6. *41L40 is a superior free machining direct hardening alloy (Lead of .500 1.008 6.010 ANNEALED COLD FINISH Diameter (inches) Pounds (per ft.680 13. the end result is improved strength and ductility.) 7.532 18.547 42..750 96.008 Diameter (inches) 1-5/8 1-3/4 1-7/8 2 2-1/4 2-1/2 2-3/4 Pounds (per ft.023 10.048 6.35).708 37.030 28.688 17. Diameter (inches) 3/4 7/8 1 1-1/8 1-1/4 1-3/8 1-1/2 Pounds (per ft.) 1-1/8 1-3/16 1-1/4 1-5/16 1-3/8 1-7/16 1-1/2 1-9/16 1-5/8 1-3/4 1-7/8 1-15/16 2 2-1/8 2-1/4 3.227 54.670 3.387 10.050 8.347 2.379 3.517 Diameter (inches) 2-3/8 2-1/2 2-9/16 2-5/8 2-3/4 2-7/8 3 3-1/4 3-1/2 3-3/4 4 4-1/4 4-1/2 5 Pounds (per ft.380 0.120 •Refer to pages 8-34 thru 8-35 for alloy tolerances.068 66.770 4. everyday AISI 4140 Quenched & Tempered ROUNDS SIZE CHART Size (inches) Length (ft.501 2.387 10.940 3.) 13.) 9.) 2- 3/16 2- 1/4 2- 7/16 2- 1/2 2-11/16 2-3/4 2-15/16 3 3-1/4 3-7/16 3- 1/2 3-15/16 4 4-7/16 4-1/2 5 6 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 Weight (per ft.400 26.044 2.) 12.050 8.780 14.500 •Refer to pages 8-34 thru 8-35 for alloy tolerances.667 1.) 2.541 32.191 23.735 0.910 18.020 10.670 3.375 .516 15.) 3/8 1/2 5/8 3/4 7/8 1 1-1/8 1-3/16 1- 1/4 1- 3/8 1-7/16 1- 1/2 1- 5/8 1- 3/4 1-7/8 1-15/16 2 Weight (per ft.148 1.707 41.750 96.600 21.654 2. Stock lengths 20' randoms 8-9 .250 30.594 5.004 10.400 2 5.863 16.384 42.600 AISI 4140 ANNEALED HEXAGONS SIZE CHART COLD FINISH Diameter (inches) Pounds (per ft.. AISI 4140 ANNEALED SQUARES SIZE CHART Diameter (inches) 1/2 5/8 3/4 7/8 Pounds (per ft.413 0.650 3 10.080 66.563 0.007 7.324 3.Alro delivers.085 6..930 1.047 5.120 •Lengths: 12-20 ft.) 12 12 12 12 20 20 20 20 20 20 20 20 20 20 20 20 20 .202 31.042 1.) 0.584 Diameter (inches) 1 1-1/16 1-1/8 1-1/4 1-3/8 1-7/16 1-1/2 1-5/8 Pounds (per ft.313 2-1/2 7.328 1.625 7.277 20.720 52.603 Diameter (inches) 1 1-1/4 1-1/2 1-3/4 COLD FINISH Pounds Diameter (per ft.350 11.413 Pounds (per ft.763 Diameter (inches) 1-3/4 1-7/8 2 2-1/4 2-1/2 3 Pounds (per ft.721 4.776 13.) 3/8 7/16 1/2 9/16 5/8 3/4 7/8 15/16 0.558 6.) (inches) 3.687 19.564 54.379 3.680 Turned Ground & Polished Size (inches) Length (ft.176 9.030 28.251 2.850 1.913 2.031 24.510 6.171 5.765 4. 60 17. Length.38 8.28 1.20 12.80 34.40 23.83 5.50 10.30 17.00 40.50 30..80 27.50 10.everyday AISI 4140 Annealed FLATS Size (inches) 1/4 x 1 -1/2 2 3 3/8 x 1 1-1/4 1 -1/2 2 3 3 -1/2 4 1/2 x 1 1 -1/2 2 2 -1/2 3 4 4-1/2 5 6 5/8 x 1 2 2-1/2 3 4 5 6 Size (inches) Pounds (per ft.75 15.70 2.10 5.13 21.40 25.00 20..55 1.77 8.84 20.55 3.40 4.20 6..46 5.91 2.56 12.28 1.80 Pounds (per ft.65 8.50 9. Squareness.80 27.88 1-1/4 x 4 4 -1/2 5 6 1-1/2 x 2 2 -1/2 3 3 -1/2 4 5 6 2 x 2-1/2 3 3 -1/2 4 5 6 2-1/2 x 4 3 x 4 17.90 13..59 1.. Angle Iron Rounds Round Tubing Channel 8-10 Hex Squares Square Tubing (888) 888-ALRO 2 5 7 6 Flat Bar . Surface Finish.19 3.25 5.00 20.20 11..83 4.) 3/4 x 1 1 -1/4 1 -1/2 2 2 -1/2 3 4 5 6 1 x 1 -1/4 1 -1/2 1 -3/4 2 2 -1/2 3 3 -1/2 4 5 6 7 8 1-1/4 x 1-1/2 2 2 -1/4 3 3 -1/2 2.) Size (inches) Pounds (per ft.25 5.20 12.75 14.00 19..30 4.80 7.31 6.20 34.) 1.13 4.65 10.Alro delivers.60 17..00 40.50 10.75 15.20 2.25 25.10 1.10 6..55 3.10 6.80 8. Alro’s Production/Precision Sawing­ Production/Precision Sawing to Your Specification Your Product Cut To Precision.75 COLD FINISH •Refer to pages 8-34 thru 8-35 for alloy tolerances.40 23.95 6.38 7.70 2.55 3.50 10..63 12.25 5. 50 MAX FORGING (a) Start forging at Do not forge below NORMALIZING (b) ANNEALING (c) Temperature Rate of cooling.36/.035 MAX Sulphur (S) .Alro delivers. 8-11 . Back Up and Support Tooling. Brinell HARDENING Rate of heating Preheat temperature Hardening temperature Time at temperature. minutes Quenching medium TEMPERING Tempering temperature Approx. tempered hardness.46 Manganese (Mn) . max. ready for use and is machinable in its hardened state 260/321 Brinell. Ejectors. per hour Typical annealed hardness. Rockwell C WEAR RESISTANCE TOUGHNESS RESISTANCE TO SOFTENING EFFECT OF ELEVATED TEMPERATURE DEPTH OF HARDENING MACHINABILITY GRINDABILITY DISTORTION IN HEAT TREATING SAFETY IN HARDENING RESISTANCE TO DECARBURIZATION 26-34 Medium Very High Low Medium Medium High •Refer to pages 8-34 thru 8-35 for alloy tolerances. Cams. Fixtures. Jigs. and many more applications where time and money are important considerations.70 Silicon (Si) . TYPICAL ANALYSIS AISI 4140/4142 (MOD) Carbon (C) .75/1..040 MAX Nickel (Ni) . Molds.15/..45 Molybdenum (Mo) .everyday AISI 4140/4142 . TYPICAL APPLICATIONS Strippers. Holder Blocks.(MOD) DCF (ALSO AVAILABLE IN HR) MEDIUM CARBON ALLOY PRE-HARDENED (Cut From Plate) 4140/4142 is a fine pre-hardened alloy steel.70/1.35 Chromium (Cr) . Mold Bases.15/.20 Phosphorus (P) . 538 4.152 17.471 1.930 21.188 1.043 11.396 11.293 15.721 5.938 21.248 7.365 16.500 8.505 2.483 6.819 5.725 7.480 31.965 1.313 3.792 11.986 0.377 2.301 2.645 4.748 2.781 4.619 •Refer to pages 8-34 thru 8-35 for alloy tolerances.777 3.458 3.583 Size (inches) 3/8 x 8 10 12 16 20 24 32 1/2 x 1/2 5/8 3/4 1 1-1/4 1-1/2 1-3/4 2 2-1/4 2-1/2 2-3/4 3 3-1/2 4 5 6 6-1/2 7 8 9 10 12 14 16 18 20 24 32 5/8 x 5/8 3/4 1 1-1/4 1-1/2 1-3/4 2 2-1/4 2-1/2 Pounds (per ft.739 0.937 10.589 7.. 8-12 Continued on next page  Size (inches) Pounds (per ft.) 0.875 2.149 13.172 6.005 10.380 6.798 4.755 42.725 43.743 3.(MOD) Pre-Hardened DCF FLATS AND SQUARES HR Pre-Hardened (Cut From Plate) SIZE C Annealed DCF HR Annealed Size (inches) 1/4 x 1/2 5/8 3/4 1 1-1/8 1-1/4 1-1/2 1-3/4 2 2-1/4 2-1/2 2-3/4 3 3-1/2 3-3/4 4 4-1/2 5 6 7 8 9 10 12 16 20 24 32 3/8 x 3/8 1/2 5/8 3/4 1 1-1/4 1-1/2 1-3/4 2 2-1/4 2-1/2 2-3/4 3 3-1/2 4 6 7 Pounds (per ft.512 25.012 18.014 7.198 3.222 9.565 0.040 6.858 2.117 3.578 14.268 15.667 16.756 2.805 42.361 17.305 2.359 8.945 13.685 12.185 3.432 6.062 4.everyday AISI 4140/4142 .803 3.325 7.845 3.755 22.280 32.482 44.909 2.441 1.178 70.524 8.633 35.960 4.611 2.835 27.513 5.085 28.096 2.622 0.717 5.780 8.305 52.416 1.018 9.) 5/8 x 2-3/4 3 3-1/2 4 4-1/2 5 6 8 10 12 16 20 24 32 3/4 x 3/4 1 1-1/4 1-1/2 1-3/4 2 2-1/4 2-1/2 2-3/4 3 3-1/2 4 5 6 8 10 12 16 20 24 32 7/8 x 7/8 1 1-1/4 1-1/2 1-3/4 2 2-1/4 2-1/2 2-3/4 6.831 8.407 3.245 1.854 3.658 32.505 0.499 29.905 1.207 1.751 3.951 4.973 1.653 6.066 5.402 4.985 5.090 1.249 4.091 4.218 9.717 5.437 2.337 10.735 0.545 .232 35.143 2.209 26.) 10.952 57..138 4.547 3.330 53.675 1.655 13.855 63.699 7.084 2. •Sizes not listed above can be cut from plate.410 1.615 0.390 21.075 1.785 22.Alro delivers.205 26.460 9.405 84. 374 4-1/2 13.027 2 7.) 7.349 4 14.347 41.Alro delivers. Continued on next page  Pounds (per ft.022 12 41.121 62.725 6 23.597 6.404 27.733 41.116 2-1/4 7.323 18.936 11.) 7/8 x 3 9.394 5.everyday AISI 4140/4142 .372 1-3/4 6.486 83.767 8.055 145.384 24.504 19.437 6 18.135 1 x 1 3.005 124.567 60.085 125.157 31.682 7.024 6.557 8 28.248 24.246 104.093 4-1/2 15.852 9.587 11.811 5 19.106 62.886 43.425 30.396 27.284 10.528 9.952 20 69.021 12.244 2 7.337 8.905 5 15.562 26.422 95.992 9.480 114.837 5 17.530 19.581 6 21.372 20.293 14.628 1-1/4 4.625 55.599 85.480 15.858 32 111.843 4 12..898 3-1/2 13.893 121.648 72.046 9 31.835 57.080 104.059 15.730 96.941 3 11.860 2-3/4 9.182 14.720 10.626 10 30.764 1-1/8 x 1-1/4 5.534 10 35.293 47.911 12.564 52.500 8 24.877 16 49.604 3-1/2 12.699 21.813 12.538 152..751 12 36.049 1-1/2 6.854 4 15.311 139.967 23.654 Size (inches) 1-1/2 x 1-1/2 1-3/4 2 2-1/4 2-1/2 2-3/4 3 3-1/2 4 4-1/2 5 6 8 10 12 16 20 24 32 1-3/4 x 1-3/4 2 3 3-1/2 4 4-1/2 5 6 8 10 12 16 20 24 32 2 x 2 2-1/4 2-1/2 2-3/4 3 3-1/2 4 4-1/2 5 6 8 Size Charts •Refer to pages 8-34 thru 8-35 for alloy tolerances.765 166.013 28.227 20.311 3-1/2 10.723 3 10.364 76.287 34.988 2-1/2 8.869 26.950 24.407 8-13 .842 31.781 17.(MOD) Pre-Hardened DCF FLATS AND SQUARES HR Pre-Hardened (Cut From Plate) SIZE CHART Annealed DCF HR Annealed Size (inches) Pounds (per ft.069 7 24.775 78.866 19.243 69.) 1-1/8 x 10 12 16 20 24 32 1-1/4 x 1-1/4 1-1/2 1-3/4 2 2-1/4 2-1/2 2-3/4 3 3-1/2 4 4-1/2 5 6 8 10 12 16 20 24 32 1-3/8 x 1-3/8 1-1/2 1-3/4 2 2-1/4 2-1/2 2-3/4 3 3-1/2 4 5 6 8 10 12 16 20 24 32 39.999 16 55.430 94.129 20 61.484 16.191 15.500 1-1/2 5. •Sizes not listed above can be cut from plate.905 24 83.885 13.208 34.445 36.777 38.360 17.102 13.543 14.106 13.218 193.632 32 98.639 8 31.803 18.727 52.742 7.984 2-1/2 9.364 21.290 10.466 Size (inches) Pounds (per ft.486 48.306 47.380 24 73. ) 189.420 34.735 110.885 62.127 206.225 343.287 221. •Sizes not listed above can be cut from plate.929 94.217 124.618 206.458 96.730 19.241 247.826 23.769 103.732 93.671 220.033 548.803 17.745 78.507 241.509 .461 137.305 247.322 26.443 41.437 371.035 494.) 309.767 480.539 138.339 69.155 186.030 658.996 494.405 288.397 576.359 123.842 105.214 138.962 206.844 124.674 330.506 329.970 247.716 43.064 169.979 329.450 120.578 275.665 23..629 412.153 47.833 172.231 87.391 384.709 38.443 144.190 82.024 876.582 31.817 113.922 219.435 192.063 21.105 165.123 30.137 384.953 165.484 329.309 51.131 137.) 2 x 10 12 16 20 24 32 2-1/4x 2-1/4 2-1/2 3 3-1/2 4 5 6 8 10 12 16 20 24 32 2-1/2 x 2-1/2 2-3/4 3 3-1/2 4 5 6 8 10 12 16 20 24 32 2-3/4 x 2-3/4 3 4 5 6 8 10 12 16 69.Alro delivers.704 151.295 439.763 62.053 275.031 302.902 69.948 165.037 82.597 57.279 39.205 206.842 42.461 72.538 548.480 Size (inches) 2-3/4 x 20 24 32 3 x 3 3-1/2 4 5 6 8 10 12 16 20 24 32 3-1/2 x 3-1/2 4 5 6 8 10 12 16 20 24 32 4 x 4 5 6 8 10 12 16 20 24 32 4-1/2 x 4-1/2 5 6 8 10 12 16 •Refer to pages 8-34 thru 8-35 for alloy tolerances.839 Size (inches) 4-1/2 x 20 24 32 5 x 5 6 8 10 12 16 20 24 32 5-1/2 x 5-1/2 6 x 6 8 10 12 16 24 32 7 x 7 8 10 12 16 20 24 32 8 x 8 10 12 16 20 24 32 Size Charts Pounds (per ft.124 248.714 274.467 48.361 55.537 27.255 227.297 438.442 186.445 93.408 31.643 155.041 75.186 155.348 28.everyday AISI 4140/4142 ..820 275.027 767.088 86.(MOD) Pre-Hardened DCF FLATS AND SQUARES HR Pre-Hardened (Cut From Plate) SIZE Annealed DCF HR Annealed Size (inches) Pounds (per ft.296 36.322 289.527 164.113 104.275 103.248 77.180 82.416 172.182 124.600 193.465 60.973 110.726 658.880 70.975 26.021 46.420 240. 8-14 Pounds (per ft.591 51. ) 20.40 71.45 275.10 61.everyday AISI 4140 .20 214. Alro has a variety of in-house plate processing services designed to save you time by getting you steps closer to your finished product.70 91.30 66.50 132. Ask your Alro Sales Representative about our plate processing services including grinding.Alro delivers.53 30. ft.575 81.88 306.72 336. Thickness 1/2 5/8 3/4 7/8 1 1-1/4 1-1/2 1-5/8 1-3/4 1-7/8 2 2-1/4 2-1/2 2-3/4 3 3-1/4 3-1/2 3-3/4 4 Weight (per sq.78 193.67 285.60 35.62 234.AS ROLLED PLATE SIZE CHART Also Available In Annealed and Pre-Hardened 4140 Hot Rolled .47 76.10 112.) 173.57 183.25 265.80 51..90 153.93 347.40 224.35 367.As Rolled is available to be saw cut or flame cut to custom sizes. top and bottom.56 •Refer to pages 8-34 thru 8-35 for alloy tolerances.73 142.99 204..14 357.15 163.30 122.90 102.04 255.30 Thickness 4-1/4 4-1/2 4-3/4 5 5-1/4 5-1/2 5-3/4 6 6-1/4 6-1/2 6-3/4 7 7-1/2 8 8-1/4 8-1/2 8-3/4 9 Weight (per sq.42 25.735 40.83 245. 8-15 .30 326. ft. 818 220.394 46.143 35.00 .753 •Refer to pages 8-34 thru 8-35 for alloy tolerances.928 90.48/.896 18.35 max .606 33.Alro delivers.397 153.409 26.724 20.146 106.10 max .15/.348 163.258 16.204 197.Steel to have a predominately lamellar pearlite structure for optimum machinability.741 273.251 185.) 123.822 61.692 Diameter (inches) 3-3/4 4 4-1/8 4-1/4 4-1/2 4-3/4 5 5-1/4 5-1/2 5-3/4 6 6-1/4 6-1/2 Pounds (per ft.078 133.com 8-16 alro.) 38.804 74.25 max .699 81..80/1.463 28. 4150 is also capable of good strength and wear resistance.020 to .75/1.04 .25 .35 .633 174. has excellent toughness. In the annealed condition.243 67. machinability is improved.234 13.680 12.050 3 ppm max 229 max Microstructure .178 208.035 max . AISI 4150 HOT ROLLED ANNEALED ROUNDS SIZE CHART Diameter (inches) Pounds (per ft. chromium-molybdenum steel.10 .alro. TYPICAL ANALYSIS Carbon (C) Manganese (Mn) Phosphorus (P) Sulphur (S) Chromium (Cr) Molybdenum (Mo) Silicon (Si) Nickel (Ni) Copper (Cu) Vanadium (V) Aluminum (Al) Hydrogen (H) BRINELL HARDNESS AISI 4150 .) 2 2-1/8 2-1/4 2-3/8 2 -1/2 2-5/8 2-3/4 2-7/8 3 3-1/8 3-1/4 3-1/2 3-5/8 10.203 98..390 114.02/.175 43.985 Diameter (inches) 6-3/4 7 7-1/4 7-1/2 7-3/4 8 8-1/4 8-1/2 8-3/4 9 9-1/4 9-1/2 10 Pounds (per ft.com .53 .everyday AISI 4150 HOT ROLLED ANNEALED 4150 grade is a medium-carbon.704 15.123 48.com alro.779 143.456 245. good ductility and has the ability to resist stress and creep at prolonged high temperatures.816 228.533 22.939 54.426 24.15/. Stock lengths 20' randoms Visit the Alro Web Site www. 10-1/2" Hot rolled. BHN 262/311 FLATS AND SQUARES Hot rolled.000 lbs psi BRINELL HARDNESS 269-321 ROCKWELL C 28-32 ELONGATlON IN 2" 16% REDUCTION IN AREA 51% ROUNDS 1/2" .com (888) 888-ALRO 2 5 7 6 8-17 ..15/. BHN 269/321 •Refer to pages 14-24 thru 14-25 for notes (a) to (o). B and W.30 Tungsten (W) Molybdenum (Mo) .035 MAX HEAT TREATMENT Quenched from 1525ºF (828ºC) Tempered at 1100ºF (593ºC) Quenching medium O (I) TENSILE STRENGTH approx.80/1.75/1. stress relieved.48/.everyday AISI 4150R Q&T SR (Resulphurized. heat treated.000 lbs psi YIELD POINT approx. A.15/. BHN 262/311 ROUNDS 11" . stress relieved.53 Manganese (Mn) .25 Chromium (Cr) . explanation of letter 0. 110.10 Phosphorus (P) . heat treated. stress relieved.20" Forged. It is especially suitable for service applications where substantial strength. S. TYPICAL ANALYSIS AISI 4150 Carbon (C) . Hot Rolled. Stress Relieved) HR 4150R HR Q&T SR is a free-machining alloy steel that provides an outstanding com­bination of heat treated properties and superior machinability.06/.. machine straightened. heat treated.10 Vanadium (V) Sulphur (S) . incI. toughness and hardness are required. (1) Per ASTM A434 Class BC Alro Steel Metals • Industrial Supplies • Plastics Contact us today and learn more about The Alro Difference! alro. 85.Alro delivers.00 Silicon (Si) .. Quenched and Tempered. This alloy steel is manufactured under close quality control for uniformity to an ASTM grain size of 5 to 8. 779 143.676 3.) 185.918 535.753 301.384 4. Visit the Alro Web Site www.394 46.com alro.500 2.251 Diameter (inches) 8-1/4 8-1/2 8-3/4 9 9-1/4 9-1/2 10 10-1/2 11 11-1/2 12 12-1/2 13 13-1/2 14 15 16 17 18 19 20 Pounds (per ft.741 273.203 98.052 6.704 15.234 13.) 3/4 7/8 1 1-1/8 1-1/4 1-3/8 1-1/2 1-5/8 1-3/4 1-7/8 2 2-1/8 2-1/4 2-3/8 2 -1/2 2-5/8 2-3/4 2-7/8 3 3-1/8 3-1/4 1.143 35.175 43.172 9.Alro delivers.397 153.310 696.390 114.456 245.204 197.699 81. Stock lengths 20' randoms 4150R HR Q&T SR is especially suitable for service applications where substantial strength.348 163.alro.896 18.856 880.409 26.822 61.680 12.463 28.985 123.384 10.725 •Refer to pages 8-34 thru 8-35 for alloy tolerances.692 38.498 360.458 330.012 7...040 2.047 613. and hardness are required.com .913 785.com 8-18 alro.123 48.541 427.606 Diameter (inches) 3-1/2 3-5/8 3-3/4 4 4-1/8 4-1/4 4-1/2 4-3/4 5 5-1/4 5-1/2 5-3/4 6 6-1/4 6-1/2 6-3/4 7 7-1/4 7-1/2 7-3/4 8 HR Pounds (per ft.533 22.724 20.078 133.146 106.056 8.874 394.818 220.258 16.928 90.178 208.816 228.633 174.124 497. toughness.everyday AISI 4150R Q&T SR ROUNDS SIZE CHART Diameter (inches) Pounds (per ft.762 1084.243 67.665 462.804 74.939 54.426 24.) 33.139 979.176 5. 90 .321 17.085 •Refer to pages 8-34 thru 8-35 for alloy tolerances. •Sizes not listed above can be cut from plate.) 5.810 42.642 4 35.020 4-1/2 39.759 9.30 .60/.55 .887 3 26.036 3-1/2 x 3-1/2 42.518 4 42.566 9.514 4 28.015/.060 8 56.035 HR Size Pounds (inches) (per ft. TYPICAL ANALYSIS Carbon (C) Manganese (Mn) Silicon (Si) Molybdenum (Mo) Chromium (Cr) Vanadium (V) Sulphur (S) Phosphorus (P) Nickel (Ni) Columbium 4150 DYBAR .10 MAX .518 5 35.) Size Charts19.10 .943 15.170 4-5/8 x 4-5/8 74.397 6 52.698 21.132 15.025 MAX .887 30.510 19.024 5 52.35 .899 4 x 4 56.518 36.698 31.(MOD) RS FLATS SIZE CHART Size (inches) 5/8 x 2-1/2 3 4-1/2 1 x 2-1/2 3-1/2 4-1/2 1-1/8 x 2-1/2 3-1/2 4-1/2 5 8 1-1/4 x 2-1/2 3-1/2 4 4-1/2 5 7 1-1/2 x 2-1/2 3 3-1/2 4 4-1/2 5 6 7 8 Pounds (per ft.385 21.20/.265 31.06/.530 6 63.848 13.550 10.638 26.670 13.265 3-1/2 30.940 1-3/4 x 3-1/4 2 x 2-1/2 17.471 6.25 MAX .065 5-1/8 x 5-1/8 93.050 6 42.080 2-1/2 x 2-1/2 21.95/1.012 23.759 18..15/.040 8 112.012 3-1/2 24.652 6-1/8 x 6-1/8 133.Alro delivers.016 4-1/2 31. 8-19 .755 12.everyday 4150 DYBAR .024 AISI 4150 .788 17. Modifications have been made to the chemical composition for increased hardenability..250 15.848 8.530 3 x 3 31.47/.510 3 21. This steel is made by a single slab electric furnace process to a silicon fully killed practice and resulphurized to set limits.25 .728 19.666 5-5/8 x 5-5/8 112.(MOD) RS HR 4150 Dybar is a special quality alloy steel that has been resulphurized for considerations for machining. ANNEALED/Q&T HR 4340 is a highly alloyed steel with high nickel and chromium content which assures deep hardening when oil quenched.000 401 42 1000º 170.000 163.90 Nickel (Ni) 1. Used for heavily stressed parts operating under strenuous conditions.000 269 28 Quench: 1475º to 1550º Anneal: 1475º to 1700º Available in Annealed and Q&T machinable state. 4340 is readily available from Alro Steel. Ask your Alro sales representative about our in-house services designed to speed up your turnaround time.00 Sulphur (S) .000 124.000 159..70/.35 Molybdenum (Mo) .. TYPICAL ANALYSIS AISI 4340 Carbon (C) .040 MAX Phosphorus (P) .38/.60/. 8-20 .000 341 37 1200º 136.Alro delivers.15/.80 Silicon (Si) .everyday AISI 4340 . with high strength characteristics throughout the section.65/2.20/.000 285 30 4" Round (1/2 radius) Tensile Yield BHN RC 800º 193.000 119.000 352 38 1200º 142.000 415 44 1000º 174.000 200.000 184.035 MAX HEAT TREATMENT Oil Quenched from 1550ºF (828ºC) Temper as shown: 1" Round (center) Tensile Yield BHN RC 800º 208.43 Manganese (Mn) .30 Chromium (Cr) . 123 48.704 15.203 98.533 24.896 20.584 427.985 535.234 13.175 43.633 174.939 54.050 8.) 24.088 61. Rough Turned. Stock lengths 20' randoms 197.384 4.896 18.913 786.) Size Charts 3/4 7/8 1 1-1/8 1-1/4 1-3/8 1-1/2 1-5/8 1-3/4 1-7/8 2 2-1/8 2-1/4 2-3/8 2-1/2 2-3/4 3 3-1/4 3-1/2 1.779 153.390 114.426 Diameter (inches) 3 3-1/8 3-1/4 3-1/2 3-3/4 4 4-1/4 4-1/2 4-3/4 5 5-1/4 5-1/2 5-3/4 6 6-1/4 6-1/2 Pounds (per ft.985 Diameter (inches) 6-3/4 7 7-1/4 7-1/2 7-3/4 8 8-1/4 8-1/2 9 9-1/2 10 10-1/2 11 11-1/2 Pounds (per ft.146 106.741 273.180 9.985 123.11" are Hot Rolled Annealed •Rounds over 11" are Forged.ANNEALED ROUNDS CHART Diameter Pounds SIZE Diameter Pounds (inches) (per ft.816 245.379 4.533 22.143 3-3/4 4 4-1/8 4-1/4 4-1/2 4-5/8 4-3/4 5 5-1/4 5-1/2 5-3/4 6 6-1/4 6-1/2 6-3/4 7 7-1/2 8 8-1/4 38.143 38.458 330.204 197.458 330.078 133.394 46.178 220.498 360.047 613.251 185. •Refer to pages 8-34 thru 8-35 for alloy tolerances.699 81.387 10.939 54.676 3.040 2.804 74.680 12.178 220.) 2.500 2.124 497.204 HR Diameter (inches) Pounds (per ft.606 33.753 301.779 143.724 20.394 48.822 61.699 81.243 67.139 1084.928 90.010 7.822 58.469 28.258 16.172 9.243 67.704 15.753 301.498 360.741 273.384 10.390 114.874 392.725 AISI 4340 .146 106.409 26.052 6.175 43.056 8.) 8-1/2 9 9-1/4 9-1/2 10 10-1/2 11 11-1/2 12 12-1/2 13 13-1/2 14 15 16 17 18 20 •Rounds 1/2" .874 8-21 .397 153.816 233.100 245.078 133.HR Q&T ROUNDS Diameter (inches) 1 1-1/8 1-1/4 1-3/8 1-1/2 1-5/8 1-3/4 1-7/8 2 2-1/8 2-1/4 2-3/8 2-1/2 2-5/8 2-3/4 2-7/8 Pounds (per ft.680 12.928 90.203 98.012 7.670 3..606 33.665 462.310 696.176 5.348 174.everyday AISI 4340 .) 123..251 185.710 880.348 163.048 6.804 74. Annealed.258 16.463 28.) (inches) (per ft.Alro delivers.170 5.234 13. Alro delivers.15/.everyday AISI 6150 . Gears. medium hardness.15 MIN 1525-1575ºF (828-855ºC) 179-217 Slowly 1500-1550ºF (816-843ºC) O (I) 400ºF (204ºC) Low Medium Medium High Medium Low Medium •Refer to pages 14-24 thru 14-25 for notes (a) to (o).70/.48/.10 .040 MAX FORGING (a) Start forging at Do not forge below NORMALIZING (b) ANNEALING (c) Temperature Rate of cooling. minutes Quenching medium TEMPERING Tempering temperature 1750-2150ºF (950-1175ºC) 1600º F (870ºC) 1650-1700ºF (899-927ºC) Approx. max. high resistance to vibratory stress. incI. tempered hardness.035 MAX . TYPICAL APPLICATIONS Arbors.53 .ANNEALED DCF An electric furnace melt of chrome vanadium steel possessing the following characteristics: oil-hardening.. per hour Typical annealed hardness..80/1. high torque strength and bright polish. A.30 .90 . B and W. Brinell HARDENING Rate of heating Preheat temperature Hardening temperature Time at temperature. Shafts. explanation of letter 0. High Strength Studs and Spindles. S. TYPICAL ANALYSIS Carbon (C) Manganese (Mn) Silicon (Si) Phosphorus (P) Sulphur (S) Molybdenum (Mo) Chromium (Cr) Vanadium (V) Cobalt (Co) AISI 6150 . Heavy Machinery Parts. Rockwell C WEAR RESISTANCE TOUGHNESS RESISTANCE TO SOFTENING EFFECT OF ELEVATED TEMPERATURE DEPTH OF HARDENING MACHINABILITY GRINDABILITY DISTORTION IN HEAT TREATING SAFETY IN HARDENING RESISTANCE TO CARBURIZATION 56-58 Medium Very High .. standard deforma­tion. 8-22 . 330 53.564 52.080 104.742 7.293 6 15.) 5.022 12 41. •Sizes not listed above can be cut from plate.755 16 42.372 •Refer to pages 8-34 thru 8-35 for alloy tolerances.952 20 69.997 22.866 19.721 2 5.785 19.886 43.764 1-1/8 x 2 -1/2 9.084 1 2.597 6.172 6.306 47.655 5 13.116 2 -1/4 7.869 26.837 5 17.777 38.852 9.337 8.013 28.018 3 -1/2 9.290 10.325 7.751 3.587 11.407 3.everyday AISI 6150 .911 12.188 1.658 35.581 6 21.530 19.405 32 84.372 1 -3/4 6.198 3.480 12 31.905 24 83.633 35.091 4.422 95.960 4.748 2.854 3.936 11.205 10 26.792 14.024 6.191 15.858 2.930 8 21.599 85.040 2 -1/2 6.699 2 -3/4 7.573 17.ANNEALED FLATS AND SQUARES (Cut From Plate) SIZE Size Pounds Size SizeCHART Pounds (inches) (per ft.021 12.937 10.480 114.218 9.149 12.952 1.604 3 -1/2 12.402 1 -1/2 4. Continued on next page  8-23 .720 10.178 (inches) (per ft.062 1-3/4 4.311 139.182 14.985 5.248 24.538 4.255 13.858 32 111.293 14.855 24 63.885 13.380 2 -1/4 6.365 17.805 42.301 2.513 5.875 3/4 x 3/4 2.512 28.835 57.208 34.505  1 x 1 3.243 69.471 1.500 1 -1/2 5.992 9.480 15.046 10 35.102 13.645 4.528 9.093 4 -1/2 15.106 13.743 1 -1/4 3.482 44.988 2 -1/2 8.767 8.410 1.208 Size Charts (inches) 1-1/4 x 1 -1/4 1 -1/2 1 -3/4 2 2 -1/4 2 -1/2 2 -3/4 3 3 -1/2 4 4 -1/2 5 6 8 10 12 16 20 24 32 1-3/8 x 1 -3/8 1 -1/2 1 -3/4 2 2 -1/4 2 -1/2 2 -3/4 3 3 -1/2 4 5 6 8 10 12 16 20 24 32 1-1/2 x 1 -1/2 1 -3/4 2 2 -1/4 2 -1/2 2 -3/4 3 3 -1/2 DCF Pounds (per ft.337 4 10.803 18.999 16 55.484 16.359 3 8.361 15.005 10.619 6..) 5/8 x 32 70.723 3 10..965 1.432 6.349 4 14.209 26.941 4 -1/2 17.538 152.069 7 24.360 17.305 2.305 20 52.628 1 -1/4 4.043 11.244 2 7.) 1/2 x 1/2 5/8 3/4 1 1-1/4 1-1/2 1-3/4 2 2-1/4 2-1/2 2-3/4 3 3-1/2 4 5 6 8 10 12 16 20 24 5/8 x 5/8 3/4 1 1-1/4 1-1/2 1-3/4 2 2-1/4 2-1/2 2-3/4 3 3-1/2 4 4-1/2 5 5-1/2 6 7 8 9 10 12 16 20 24 0.831 8.Alro delivers.938 21.654 7.699 21.725 7.066 5.557 8 28.860 2 -3/4 9.682 7.364 76. 833 172.035 494.648 72.733 41.880 70.970 247.416 172.484 329.442 186.037 82.157 31.055 145.714 274.537 165.com alro.305 247.467 48.227 20.820 275.962 206.391 384.) 4 x 4 5 6 8 10 12 14 16 20 24 32 4-1/2 x 4 -1/2 5 6 8 10 12 16 20 24 32 5 x 5 6 8 10 12 16 20 24 32 6 x 6 8 10 12 16 20 24 32 55.005 127.591 51. Sizes not listed above can be cut from plate.420 240.445 33.) 110.445 93.979 329.839 309.465 60.450 120.420 34.973 (inches) 2 x 16 20 24 32 2-1/2 x 2 -1/2 2 -3/4 3 3 -1/2 4 5 6 8 10 12 16 20 24 3 x 3 3 -1/2 4 5 6 8 10 12 14 16 20 24 32 3-1/2 x 3 -1/2 4 5 6 8 10 12 16 20 24 32 (per ft.562 26.com 8-24 alro.608 60.885 62..506 329.284 10.671 220.996 412.922 192.131 137.567 54.241 247.902 69.everyday AISI 6150 .844 124.404 27.618 206.948 144.) 1-1/2 x 4 4 -1/2 5 6 8 10 12 16 20 24 32 1-3/4 x 1 -3/4 2 3 3 -1/2 4 4 -1/2 5 5 -1/2 6 7 8 9 10 12 16 20 24 32 2 x 2 2 -1/4 2 -1/2 2 -3/4 3 3 -1/2 4 4 -1/2 5 6 8 10 12 20.461 137.443 144.323 18.578 31.643 155.465 36.106 62.504 19.745 78.064 •Refer to pages 8-34 thru 8-35 for alloy tolerances.246 104.716 43.458 96.629 412.296 36.842 42.893 121.339 69.225 343.231 87.361 (inches) (per ft.443 41.842 124.105 165.396 27.765 166.218 193..813 12.405 288.113 104.033 548.781 17.013 494.486 42.205 206.950 24.318 219.Alro delivers.543 14.214 138.030 658.359 123.347 41. Visit the Alro Web Site www.539 138.127 206.437 371.287 34.059 15.364 21.435 192.190 82.727 52.180 82.842 31.486 83.953 165.297 438.275 103.088 86.526 48.com .527 164.826 23.769 103.625 55.425 30.alro.735 110.803 21.975 26.967 23.309 51.ANNEALED DCF FLATS AND SQUARES Size (Cut Charts From Plate) SIZE CHART Size Pounds Size Pounds Size Pounds (inches) (per ft.407 69.461 72.123 30.730 96.384 24. .012 7.822 61.680 12.203 98.390 10. medium hardness.816 245.Alro delivers..606 33.alro.704 16.771 Diameter (inches) Pounds (per ft.896 18.724 20. and bright polish.everyday AISI 6150 .985 133.928 90. Stock lengths 20' randoms 6150 offers: oil-hardening.716 303.143 38.com alro.com 8-25 .) 28.741 273.047 613.230 13.409 Diameter (inches) 3 -1/4 3 -1/2 3 -3/4 4 4 -1/4 4 -1/2 4 -3/4 5 5 -1/4 5 -1/2 5-3/4 6 6 -1/4 6 -1/2 7 HR Size Charts Pounds (per ft.676 3. Visit the Alro Web Site www.541 462.) 7 -1/2 8 8 -1/2 9 9 -1/2 10 10 -1/2 11 11 -1/2 12 13 14 15 16 153.310 696.394 48.176 5.913 Over 10" is forged •Refer to pages 8-34 thru 8-35 for alloy tolerances.699 81.052 6. high resistance to vibratory stress.804 74.533 24.384 4. standard deforma­tion. high torque strength.298 362.056 8.390 114.com alro.175 43.348 174.179 332.) 1 1 -1/8 1 -1/4 1 -3/8 1 -1/2 1 -5/8 1 -3/4 1-7/8 2 2 -1/8 2 -1/4 2 -1/2 2-5/8 2 -3/4 3 2.124 535.939 54.146 103.ANNEALED ROUNDS SIZE CHART Diameter (inches) Pounds (per ft.180 9.751 394.243 67.251 197.178 220. Need Thermal Processing? At the Alro Steel Processing Center we offer: • Stress Relieving • Normalizing • Annealing Alro Steel Processing Center alro.70 .40/. S.000 lbs.60 . B and W. PSI 64.com We Process Parts to Your Specification For more information call today! 8-26 .035 MAX . explanation of letter 0.30 . incI. TYPICAL ANALYSIS Carbon (C) Manganese (Mn) Silicon (Si) Nickel (Ni) Molybdenum (Mn) Chromium (Cr) Phosphorus (P) Sulphur (S) *Lead HEAT TREATMENT Carburize temperature (Allow to cool in carburizing box) Reheat temperature Quenching medium TENSILE STRENGTH YIELD POINT BRINELL HARDNESS ROCKWELL B ELONGATION IN 2" REDUCTION IN AREA AISI 8620/86L20 .everyday AISI 8620/86L20 Carefully controlled proportions of chromium. nickel and molybdenum are respon­sible for the extensive use of 8620 as a carburizing alloy steel.90 .Alro delivers..15/.000 lbs. Valuable features of this grade include extreme surface hardenability and internal strength.40/. PSI 192 92 25% 58% •Refer to pages 14-24 thru 14-25 for notes (a) to (o). A.35 MACHINABILITY 58% 1700ºF (927ºC) 155OºF (843ºC O (I) 92.23 . *Applies only to 8620 leaded alloy steel bars.040 MAX ...70/.18/.25 .15/.15/. 092 11.227 1.667 6.658 6 21.934 1-1/4 x 1 -1/4 5.065 8.404 17.131 4.114 5.786 2.076 9.684 4.117 2 -3/4 12.935 1.778 1 -3/4 7.296 2 -3/4 14.692 1 -1/2 6.849 5.757 7.530 44.451 1.044 10.151 9.081 4 -1/2 23.304 8 34.676 5 26.141 4.577 5.988 21.120 4.076 16 56.467 2.807 3.594 0.456 4 17.879 8.351 15.801 3.252 1.681 12.406 1-1/2 x 1 -1/2 8.773 7.378 53.704 4.237 3.363 52.461 8 41.201 3 13.417 8.169 4 -1/2 15.) Size (inches) 0.702 2 -1/4 11.338 16 69.796 2.220 6.891 3 -1/2 18. Continued on next page  8-27 .551 28.123 10 35.008 4.530 8.991 1.897 2.168 4.050 24 104.947 2 -1/4 10.446 1.098 6.) 5.126 2.032 13.488 3.791 3.795 5 21.438 6.827 4.271 6 31. • Weights above include nominal oversize tolerance.119 24 124.257 8.364 7. • Sizes not listed above can be cut from plate.985 10.561 5/8 x 2 -1/4 2 -1/2 2 -3/4 3 3 -1/2 4 4 -1/2 5 6 8 10 12 16 20 24 3/4 x 3/4 1 1 -1/4 1 -1/2 1 -3/4 2 2 -1/4 2 -1/2 2 -3/4 3 3 -1/2 4 4 -1/2 5 6 8 10 12 16 20 24 1 x 1 1 -1/8 1 -1/4 1 -1/2 1 -3/4 2 2 -1/4 2 -1/2 2 -3/4 3 3 -1/2 Pounds (per ft.004 1.981 24 83.618 14.694 20 87.765 0.028 20 69.105 1.841 10 52.809 10.999 2 -1/2 13.937 9.147 3.141 2.286 3 -1/2 15.964 6 26.844 42.221 12 62.463 3.263 26.594 3 15.425 Size (inches) HR Pounds (per ft.099 12 42.682 35.834 22.471 6.697 35.913 63.Alro delivers.344 2.660 12 52.538 31.878 •Refer to pages 8-34 thru 8-35 for alloy tolerances.902 3.455 4. Actual weights may vary.577 5.520 1.460 4.349 2.257 26.024 5.227 2.600 16 83.198 13.everyday AISI 8620 Size Charts FLATS AND SQUARES CUT FROM PLATE Size (inches) 3/8 x 3/8 1/2 5/8 3/4 1 1 -1/4 1 -1/2 1 -3/4 2 2 -1/4 2 -1/2 2 -3/4 3 3 -1/2 4 6 1/2 x 1/2 5/8 3/4 1 1 -1/4 1 -1/2 1 -3/4 2 2 -1/4 2 -1/2 2 -3/4 3 3 -1/2 4 4 -1/2 5 6 7 8 10 12 16 20 24 5/8 x 5/8 3/4 1 1 -1/4 1 -1/2 1 -3/4 2 Pounds (per ft..978 21.395 10.831 12.359 20 104.106 2 10.713 12.779 5.625 4 -1/2 19.982 10 43.321 7.813 42..862 2 8.032 2 -1/2 11.914 5 17.486 4 21.193 8.449 6.) 1 x 4 14.146 8 28.410 17. 025 20 121.164 26.387 124.com 8-28 alro.945 2 12.862 16 97.993 4 -1/2 31.991 219.357 155.451 55.com alro.822 2-1/4 x 2 -1/4 17.everyday AISI 8620 HR FLATS AND SQUARES CUT FROM PLATE SIZE CHART Size Pounds Size Pounds Size Pounds (inches) (per ft.480 240.495 192.408 62.498 47.996 103.com .alro.934 62. Visit the Alro Web Site www.585 124.690 20 138.559 9 62.102 3 -1/2 24.547 4 27.609 34.656 2 -3/4 19.015 24.578 6 36.353 206.394 206.532 247.776 8 55.465 288.804 110.650 138.199 137..619 8 48.933 2 -1/2 17.523 60.438 5 34.502 144.767 31.188 24 145.964 (inches) (per ft.366 •Refer to pages 8-34 thru 8-35 for alloy tolerances.464 103.) 3 x 5 6 8 10 12 16 20 24 3-1/2 x 3 -1/2 4 4 -1/2 5 5 -1/2 6 8 10 12 16 20 24 4 x 4 4 -1/2 5 5 -1/2 6 8 10 12 16 20 24 52.257 24 165.112 62.700 10 60.091 69.277 86.063 46.125 16 110.342 12 83.456 2 -1/2 15.670 41.202 43.723 72.312 30.210 2 -1/4 15..578 31.) 1-3/4 x 1 -3/4 10.836 (inches) 2-1/4 x 2 -3/4 3 3 -1/2 4 4 -1/2 5 5 -1/2 6 8 10 12 16 20 24 2-1/2 x 2 -1/2 2 -3/4 3 3 -1/2 4 4 -1/2 5 5 -1/2 6 8 10 12 16 20 24 3 x 3 3 -1/2 4 4 -1/2 (per ft.522 36.451 10 69.476 3 18.174 165.326 165.730 48.707 27.905 39.191 43.) 21.955 82.525 54.885 6 41.782 274. •Sizes not listed above can be cut from plate.350 2 x 2 14.Alro delivers.900 2 -1/2 19.574 329.518 96.320 39.557 5 30.497 4 24.711 42.379 3 21.106 75.510 120.022 172.771 23.795 52.537 4 -1/2 27.406 82.449 35.781 12 72.257 69.418 77.521 66.817 46.903 93.823 22.595 164. ) 3.398 Diameter Charts (inches) 2-3/4 2-7/8 3 3-1/8 3-1/4 3-3/8 3-1/2 3-3/4 4 4-1/4 4-1/2 4-3/4 5 6 Pounds (per ft.243 67.533 22.699 81.704 15.052 5.76 4.511 0.708 37.000 1558.692 38.517 6.387 10.172 4.227 54.014 3.202 30.078 133.044 1.852 880.167 0.804 74.143 35.426 24.502 1.720 48.763 2.047 613.056 8..397 153.Alro delivers.043 1.100 245.310 696.812 273.384 10.384 3.242 66.668 0.050 8.177 9.068 60.379 Diameter (inches) 1-3/16 1-1/4 1-5/16 1-3/8 1-7/16 1-1/2 1-5/8 1-3/4 1-7/8 2 2-1/8 2-1/4 2-3/8 2-1/2 2-5/8 Pounds (perSize ft.741 253.172 9.01 3.606 33.633 174.822 61.040 2.500 2.123 48.913 785.258 16.074 28.439 301.939 54.670 3.) 28.390 114.816 233.60 5.765 4.234 13.52 6.060 16.124 535.779 143.498 362. Stock lengths 12' (20' available in most sizes).896 18.203 98.590 1084.750 96.) 1.680 12.176 4.048 5.680 12.753 287.) 20.030 26. 8-29 .463 Diameter (inches) 3-1/4 3-1/2 3-5/8 3-3/4 4 4-1/8 4-1/4 4-1/2 4-3/4 5 5-1/4 5-1/2 5-3/4 6 6-1/4 6-1/2 6-3/4 7 7-1/4 7-1/2 7-3/4 8 8-1/4 8-1/2 8-3/4 HR Pounds (per ft.146 106.188 •Refer to pages 8-34 thru 8-35 for alloy tolerances.584 434.724 20.347 2.192 22.375 0.517 15.458 330.044 2.409 26.872 1307.928 90.041 462.178 208.818 Diameter (inches) Pounds (per ft.069 24.547 42.262 1.008 7.676 3.057 13.204 197.348 163.258 976.20' randoms CF AISI 8620 ROUNDS SIZE CHART Diameter (inches) 1/4 5/16 3/8 7/16 1/2 9/16 5/8 11/16 3/4 13/16 7/8 15/16 1 1-1/16 1-1/8 Pounds (per ft.394 46. Stock lengths 18' .261 0.120 •Refer to pages 8-34 thru 8-35 for alloy tolerances.688 18.012 7.175 43..845 1.599 5.251 185.everyday Size Charts AISI 8620 ROUNDS SIZE CHART Diameter (inches) 5/8 3/4 7/8 1 1-1/16 1-1/8 1-3/16 1-1/4 1-5/16 1-3/8 1-7/16 1-1/2 1-5/8 1-3/4 1-7/8 2 2-1/8 2-1/4 2-3/8 2-1/2 2-5/8 2-3/4 2-7/8 3 3-1/8 Pounds (per ft.) 0.413 32.752 392.) 9 9-1/4 9-1/2 9-3/4 10 10-1/4 10-1/2 11 11-1/2 12 12-1/2 13 14 15 16 17 18 19 20 22 24 220.985 123. 05 5.01 7.025 MAX PHYSICAL PROPERTIES Contact Alro for specific certification.alro. ft.67 3.3 •Refer to pages 8-34 thru 8-35 for alloy tolerances.2 71.85 1.com .) 1/2 3/4 1 1-1/8 1-1/4 1-1/2 1-3/4 2 20.30 1.52 6.9 163.40 20.0 112. AISI 52100 AISI 52100 is a moderately deep hardening alloy having high resistance to wear.025 MAX .) 2-1/4 2-1/2 2-3/4 3 3-1/2 4 91.45 ..47 81.0 61.38 0.Alro delivers.50 2.15-. ft.04 1.04 2.69 18. medium toughness.03 32.68 AISI 8620 PLATE Diameter (inches) 2-1/8 2-1/4 2-1/2 2-5/8 2-3/4 3 3-1/2 Pounds (per ft.38 Diameter (inches) 1-1/4 1-3/8 1-7/16 1-1/2 1-5/8 1-3/4 1-7/8 2 Pounds (per ft.6 HR Thickness Weight (per sq.05 8.52 16.06 13.98/1.) 4.com 8-30 alro.9 51. Visit the Alro Web Site www. TYPICAL ANALYSIS Carbon (C) Manganese (Mn) Silicon (Si) Chromium (Cr) Phosphorus (P) Sulphur (S) AISI 52100 .19 24.60 .39 10.) 12.71 Size Charts Thickness Weight (per sq.) 0. and low resistance to softening at high temperatures.31 122.67 0.6 40..30/1.4 30.17 5.89 102.everyday CF AISI 86L20 Size Charts ROUNDS SIZE CHART Diameter (inches) 3/8 1/2 9/16 5/8 3/4 7/8 1 1-1/8 Pounds (per ft.com alro.25/0.18 9.10 .4 142.8 45. 670 X 3.880 X 197.547 X 42.176 X X 8.) CF Spheroidize Annealed.078 X 130.069 X 24.780 X 9. HR Spheroidize Annealed.816 X 273.230 X 54.030 X 28.386 X X 10.007 X 7. 0. B.everyday AISI 52100 ROUNDS SIZE CHART Diameter (inches) 3/8 1/2 5/8 3/4 13/16 7/8 1 1-1/8 1-1/4 1-3/8 1-1/2 1-5/8 1-3/4 1-13/16 1-7/8 2 2-1/4 2-3/8 2-1/2 2-5/8 2-3/4 2-7/8 3 3-1/4 3-1/2 3-3/4 4 4-1/4 4-1/2 4-3/4 5 5-1/4 5-1/2 6 6-1/4 6-1/2 6-3/4 7 7-1/2 8 8-1/2 9 10 11 12 Pounds (per ft.042 X 1.512 X 15.400 X 20.120 X 104.178 X 220.060 X 16.Q.240 X 66.590 X 80..501 X 1.047 X 6.379 X 4.667 X 1.380 X 0.760 X 2.767 X 96.807 X 123.535 X 8-31 .753 X 332.187 X 170.680 X 13.750 X 73.201 X 32.Q.296 X 112.298 X 393.191 X 22.720 X 48. B.044 X 2.067 X 60.830 X 150.171 X 5.050 X X 8.710 X 37.Alro delivers..687 X 18. and short-run stamping and bending dies all offer opportunities to utilize the unique prehardened yet machinable characteristics of Brake Die..000 psi Elongation.........130........... No quench required.....com 8-32 alro. TYPICAL APPLICATIONS Brake Die steel may be used for all types of dies for the forming and bending of sheets....com alro..... In addition......everyday ALRO BRAKE DIE Prehardened Brinell 269/321 Alro Brake Die is a medium alloy steel heat treated at mill by oil quenching and tempering to develop the best balance of mechanical properties... TYPICAL ANALYSIS Carbon (C) Manganese (Mn) Molybdenum (Mo) Chromium (Cr) Brake Die .... the bars are stress-relieved before final straightening..500oF..... toughness...... die holders. This ensures a minimum of residual stresses so that bars remain straight during machining......141......com ........ and good machinability. Maintain flame nozzle 1/4" from work piece................25 PHYSICAL PROPERTIES 1" ROUND BAR TESTED ON THE DRAW OF 1200oF (649oC) Tensile Strength............. This portion of metal will harden to a Rockwell of 54-59.. strip and other flat-rolled metallic and non-metallic materials.28 FLAME HARDENING Higher hardnesses at wear points may be achieved by merely heating a oxyacetylene torch long enough to heat surface to a cherry red at approximately 1.......35 ....000 psi Yield Strength........25/. Back up and support tooling......90/1.............Alro delivers..... Many machine parts...... due to the rapid cooling produced by the conduction of heat from the small heated area into the larger adjacent areas which have not been heat treated.05 ..... Machines easily without warping . Reasonable care should be taken to prevent over heating and melting...alro. high mechanical properties.due to stress relief treatment.53 ...... can be made from Brake Die....................48/.87/1. This prehardened steel has every requisite for all around good service in any application requiring wear resistance..... Machines to a smooth surface without grinding........18% Brinell Hardness...................... ADVANTAGES Heat treated and ready to use for maximum wear and toughness........275 Rockwell C Hardness...... requiring a steel with high mechanical properties.. Visit the Alro Web Site www............ 187* Edge Squareness .060 to +. may reduce purchased weight. KPM Super Square M a c h I n e d Machined Machined Thickness Finish M a c h I n e d Ground or Milled Thickness Tolerance +.alro.com alro.025 .com 8-33 . with its already-squared edges and tighter tolerances.025 +.015 to +.Availability (Flats & Squares) Available in most thicknesses and widths. KPM Super Square .015 to +.002 TIR KPM Super Square . Super Square starts at 1/2" thick and 1-1/2" wide up to 12" wide.015 to +..002" TIR *Lengths (5-side or 6-side) can be machined to special tolerances if desired..025 Width Finish Width Tolerance Ground or Milled +.Alloy Grades 4140 Annealed 4140 Heat Treated 6150 8620 KPM Super Square .com alro.Tolerances Thickness: Width: Squareness within: +.everyday KPM SUPER SQUARE KPM Super Square.015 to +.025 Length Finish Saw Cut Length Tolerance +. and increases die build efficiency. Visit the Alro Web Site www.Alro delivers. many hours of valuable machine time. 0015 +0 .010 Over 1-1/8 thru 1-1/4 0.008 0....008 Over 7/8 thru 1 0......001 +0 .0...0.007 Over 5/8 thru 7/8 0.003 +0 .005 +0 .005 Over 5/16 thru 7/16 0..015 0.009 Over 1 thru 1-1/8 0..023 0.0......010 0...077 oversize on width Thickness over 4".012 0.010 0...0...005 Heat Treated All Carbons +0 .......008 0....0..014 0.009 0.001 +0 ...003 +0 ... Ground & Polished Diameter Range (inches) Up thru 1-1/2 Over 1-1/2 thru 2-1/2 Over 2-1/2 thru 3 Over 3 thru 4 Over 4 thru 6 Over 6 Not Heat Treated All Carbons +0 .. +0.011 Over 1-1/4 thru 1-3/8 0.062 to +0.........011 0.0.. Out-of-square section is the difference in perpendicular distance between opposite faces.......085 0..023 0...156 over 4" 8-34 ...0. measured at the same transverse cross section....0.everyday HOT ROLLED ALLOY BARS SIZE TOLERANCES AND OUT-OF-ROUND OR OUT-OF SQUARE TOLERANCES Hot Rolled Alloy Bars Round...Alro delivers...007 0. +0.006 DCF THICKNESS & WIDTH OVERSIZE RANGES Thickness 1/2" thru 4".0015 +0 .005 0...060 to +0..015 to +0...018 0..006 Over 7/16 thru 5/8 0.....002 +0 .046 0......0....012 0....009 0.058 0.......004 +0 .014 Over 1-1/2 thru 2 1/64 1/64 Over 2 thru 2-1/2 1/32 0 Over 2-1/2 thru 3-1/2 3/64 0 Over 3-1/2 thru 4-1/2 1/16 0 Over 4-1/2 thru 5-1/2 5/64 0 Over 5-1/2 thru 6-1/2 1/8 0 Over 6-1/2 thru 8-1/4 5/32 0 Over 8-1/4 thru 9-1/2 3/16 0 Over 9-1/2 1/4 0 Out-of-Round or Out-of-Square Section (inches) 0... +0.015 to +0.. Square.......... and Round-Cornered Square Size Tolerances (inches) Specified Sizes (inches) Over Under Up thru 5/16 0.....021 0.006 0.070 0... +0....0..035 0.002 +0 .........0..ROUNDS Turned & Ground/Turned..... measured at the same transverse cross section....012 Over 1-3/8 thru 1-1/2 0..016 0..124 oversize on width Thickness.013 0.120 Out-of-round is the difference between the maximum and minimum diameters of the bar....100 0....0. SIZE TOLERANCES ....035 oversize thru 4" ... .008 ...006 .. +.11 -........04 -.01 3 to 3-3/4.............. .....03 -.007 ..........28% Max.......004 ........... +.03 -.07 -...005 ......009 thru 1-1/2 thru 2-1/2 thru 3-1/8 .....01 4 to 4-1/2..01 1/2...009 ...........013 ...........035 .........003 .......007 ... Carbon Over ..003 .010 ....... Carbon Over ......009 .........007 ..007 ... +.007 .... • Tolerances for flats apply to thickness as well as to width.........01 2 to 2-3/4......003 .........005 ...15 -.017 .........005 .....................005 ..007 FLATS (Width) Up thru 3/4 Over 3/4 thru 1-1/2 Over 1-1/2 thru 3 Over 3 thru 4 Over 4 thru 6 Over 6 ........007 ....28% thru ....... +..011 .........006 ....................005 ..01 5/8...Alro delivers...................010 . 150® ..021 ..009 E...008 ...T...04 -..004 ...13 -.D.... 8-35 ..55% ......009 ......01 1 to 1-7/8.007 SQUARES Up thru 3/4 Over 3/4 thru 1-1/2 Over 1-1/2 thru 2-1/2 Over 2-1/2 thru 3-1/8 ...................01 3/4 and 7/8....009 ....008 .008 ..................004 .+..........007 ........010 ...........everyday THICKNESS TOLERANCES 4140 HRA and 8620 HR FLATS All widths RANGE FROM ......014 ROUNDS (Cold Drawn Or Turned & Polished) Up thru 1-1/2 Over 1-1/2 thru 2-1/2 Over 2-1/2 thru 4 Over 4 thru 6 Over 6 thru 8 Over 8 thru 9 HEXAGONS Up thru 3/4 Over 3/4 Over 1-1/2 Over 2-1/2 Max... Max..004 ..006 ..006 .....010 .......................008 ...........................005 ...012 ................004 ....004 .......006 ..... +....005 .. +..006 ...011 ...........55% Or All Carbons Heat Treated .......124 OVERSIZE Thickness (inches) Tolerance 3/8........006 .006 ......007 ............01 STANDARD MANUFACTURING TOLERANCES COLD FINISHED ALLOY BARS Undersize variation in inches Size & Shape Carbon thru ...........009 . +.008 ....005 .006 ....................012 .. ..everyday 8-36 .Alro delivers.