4140 Heat Treated Cold Drawn or G & P Alloy Steel - Rounds
4140 Heat Treated Cold Drawn or G & P Alloy Steel
These are oil-hardening steels of relatively high hardenability. Their chromium content provides good hardness penetration, and the molybdenum imparts uniformity of hardness and high strength. These grades are especially suitable for forging because they have self-scaling characteristics. They respond readily to heat treatment and are comparatively easy to machine in the heat treated condition. They resist creep in temperatures up to 1000°F and maintain their properties even after long exposure at these relatively high working temperatures. With a combination of such highly desirable properties as good strength and wear resistance, excellent toughness coupled with good ductility, and the ability to resist stress at elevated temperatures, it is understandable why these are widely used and highly successful alloy steels.
This material is also available as leaded steel. The addition of lead improves machinability without sacrificing other desirable properties, with the exception that the use of this material is not recommended for applications over 400°F, since at elevated temperature ductility is low.
The following specifications are generally applicable for 4140/42 Heat Treated Rounds: ASTM A 193, Grade B7; ASTM A 434, Grades BC and BD.
Stock Lengths 12' and 20'
This material is also available as leaded steel. The addition of lead improves machinability without sacrificing other desirable properties, with the exception that the use of this material is not recommended for applications over 400°F, since at elevated temperature ductility is low.
The following specifications are generally applicable for 4140/42 Heat Treated Rounds: ASTM A 193, Grade B7; ASTM A 434, Grades BC and BD.
Stock Lengths 12' and 20'
Size |
Estimated Weight per Foot |
Estimated Weight 12-Ft. Bar |
|---|---|---|
| 1/4 1/4/Asset/1018-Cold-Finished-Rounds.JPG | Estimated Weight per Foot N/A .1671 lb | Estimated Weight 12-Ft. Bar N/A 2.005 lb |
| 5/16 5/16/Asset/1018-Cold-Finished-Rounds.JPG | Estimated Weight per Foot N/A .2610 lb | Estimated Weight 12-Ft. Bar N/A 3.132 lb |
| 3/8 3/8/Asset/1018-Cold-Finished-Rounds.JPG | Estimated Weight per Foot N/A .3759 lb | Estimated Weight 12-Ft. Bar N/A 4.510 lb |
| 7/16 7/16/Asset/1018-Cold-Finished-Rounds.JPG | Estimated Weight per Foot N/A .5116 lb | Estimated Weight 12-Ft. Bar N/A 6.139 lb |
| 1/2 1/2/Asset/1018-Cold-Finished-Rounds.JPG | Estimated Weight per Foot N/A .6682 lb | Estimated Weight 12-Ft. Bar N/A 8.019 lb |
| 9/16 9/16/Asset/1018-Cold-Finished-Rounds.JPG | Estimated Weight per Foot N/A .8457 lb | Estimated Weight 12-Ft. Bar N/A 10.15 lb |
| 5/8 5/8/Asset/1018-Cold-Finished-Rounds.JPG | Estimated Weight per Foot N/A 1.044 lb | Estimated Weight 12-Ft. Bar N/A 12.53 lb |
| 11/16 11/16/Asset/1018-Cold-Finished-Rounds.JPG | Estimated Weight per Foot N/A 1.263 lb | Estimated Weight 12-Ft. Bar N/A 15.16 lb |
| 3/4 3/4/Asset/1018-Cold-Finished-Rounds.JPG | Estimated Weight per Foot N/A 1.504 lb | Estimated Weight 12-Ft. Bar N/A 18.04 lb |
| 13/16 13/16/Asset/1018-Cold-Finished-Rounds.JPG | Estimated Weight per Foot N/A 1.765 lb | Estimated Weight 12-Ft. Bar N/A 21.17 lb |
| 7/8 7/8/Asset/1018-Cold-Finished-Rounds.JPG | Estimated Weight per Foot N/A 2.046 lb | Estimated Weight 12-Ft. Bar N/A 24.56 lb |
| 15/16 15/16/Asset/1018-Cold-Finished-Rounds.JPG | Estimated Weight per Foot N/A 2.349 lb | Estimated Weight 12-Ft. Bar N/A 28.19 lb |
| 1 1/Asset/1018-Cold-Finished-Rounds.JPG | Estimated Weight per Foot N/A 2.673 lb | Estimated Weight 12-Ft. Bar N/A 32.07 lb |
| 1 1/16 1 1/16/Asset/1018-Cold-Finished-Rounds.JPG | Estimated Weight per Foot N/A 3.017 lb | Estimated Weight 12-Ft. Bar N/A 36.21 lb |
| 1 1/8 1 1/8/Asset/1018-Cold-Finished-Rounds.JPG | Estimated Weight per Foot N/A 3.383 lb | Estimated Weight 12-Ft. Bar N/A 40.59 lb |
| 1 3/16 1 3/16/Asset/1018-Cold-Finished-Rounds.JPG | Estimated Weight per Foot N/A 3.769 lb | Estimated Weight 12-Ft. Bar N/A 45.23 lb |
| 1 1/4 1 1/4/Asset/1018-Cold-Finished-Rounds.JPG | Estimated Weight per Foot N/A 4.176 lb | Estimated Weight 12-Ft. Bar N/A 50.12 lb |
| 1 5/16 1 5/16/Asset/1018-Cold-Finished-Rounds.JPG | Estimated Weight per Foot N/A 4.604 lb | Estimated Weight 12-Ft. Bar N/A 55.25 lb |
| 1 3/8 1 3/8/Asset/1018-Cold-Finished-Rounds.JPG | Estimated Weight per Foot N/A 5.053 lb | Estimated Weight 12-Ft. Bar N/A 60.64 lb |
| 1 7/16 1 7/16/Asset/1018-Cold-Finished-Rounds.JPG | Estimated Weight per Foot N/A 5.523 lb | Estimated Weight 12-Ft. Bar N/A 66.28 lb |
| 1 1/2 1 1/2/Asset/1018-Cold-Finished-Rounds.JPG | Estimated Weight per Foot N/A 6.014 lb | Estimated Weight 12-Ft. Bar N/A 72.17 lb |
| 1 9/16 1 9/16/Asset/1018-Cold-Finished-Rounds.JPG | Estimated Weight per Foot N/A 6.526 lb | Estimated Weight 12-Ft. Bar N/A 78.31 lb |
| 1 5/8 1 5/8/Asset/1018-Cold-Finished-Rounds.JPG | Estimated Weight per Foot N/A 7.058 lb | Estimated Weight 12-Ft. Bar N/A 84.70 lb |
| 1 11/16 1 11/16/Asset/1018-Cold-Finished-Rounds.JPG | Estimated Weight per Foot N/A 7.612 lb | Estimated Weight 12-Ft. Bar N/A 91.34 lb |
| 1 3/4 1 3/4/Asset/1018-Cold-Finished-Rounds.JPG | Estimated Weight per Foot N/A 8.186 lb | Estimated Weight 12-Ft. Bar N/A 98.23 lb |
| 1 13/16 1 13/16/Asset/1018-Cold-Finished-Rounds.JPG | Estimated Weight per Foot N/A 8.781 lb | Estimated Weight 12-Ft. Bar N/A 105.4 lb |
| 1 7/8 1 7/8/Asset/1018-Cold-Finished-Rounds.JPG | Estimated Weight per Foot N/A 9.397 lb | Estimated Weight 12-Ft. Bar N/A 112.8 lb |
| 1 15/16 1 15/16/Asset/1018-Cold-Finished-Rounds.JPG | Estimated Weight per Foot N/A 10.03 lb | Estimated Weight 12-Ft. Bar N/A 120.4 lb |
| 2 2/Asset/1018-Cold-Finished-Rounds.JPG | Estimated Weight per Foot N/A 10.69 lb | Estimated Weight 12-Ft. Bar N/A 128.3 lb |
| 2 1/8 2 1/8/Asset/1018-Cold-Finished-Rounds.JPG | Estimated Weight per Foot N/A 12.07 lb | Estimated Weight 12-Ft. Bar N/A 144.8 lb |
| 2 1/4 2 1/4/Asset/1018-Cold-Finished-Rounds.JPG | Estimated Weight per Foot N/A 13.53 lb | Estimated Weight 12-Ft. Bar N/A 162.4 lb |
| 2 5/16 2 5/16/Asset/1018-Cold-Finished-Rounds.JPG | Estimated Weight per Foot N/A 14.29 lb | Estimated Weight 12-Ft. Bar N/A 171.5 lb |
| 2 3/8 2 3/8/Asset/1018-Cold-Finished-Rounds.JPG | Estimated Weight per Foot N/A 15.08 lb | Estimated Weight 12-Ft. Bar N/A 180.9 lb |
| 2 7/16 2 7/16/Asset/1018-Cold-Finished-Rounds.JPG | Estimated Weight per Foot N/A 15.88 lb | Estimated Weight 12-Ft. Bar N/A 190.6 lb |
| 2 1/2 2 1/2/Asset/1018-Cold-Finished-Rounds.JPG | Estimated Weight per Foot N/A 16.71 lb | Estimated Weight 12-Ft. Bar N/A 200.5 lb |
| 2 5/8 2 5/8/Asset/1018-Cold-Finished-Rounds.JPG | Estimated Weight per Foot N/A 18.42 lb | Estimated Weight 12-Ft. Bar N/A 221.0 lb |
| 2 3/4 2 3/4/Asset/1018-Cold-Finished-Rounds.JPG | Estimated Weight per Foot N/A 20.21 lb | Estimated Weight 12-Ft. Bar N/A 242.6 lb |
| 2 15/16 2 15/16/Asset/1018-Cold-Finished-Rounds.JPG | Estimated Weight per Foot N/A 23.06 lb | Estimated Weight 12-Ft. Bar N/A 276.8 lb |
| 3 3/Asset/1018-Cold-Finished-Rounds.JPG | Estimated Weight per Foot N/A 24.06 lb | Estimated Weight 12-Ft. Bar N/A 288 7 lb |
| 3 1/8 3 1/8/Asset/1018-Cold-Finished-Rounds.JPG | Estimated Weight per Foot N/A 26.10 lb | Estimated Weight 12-Ft. Bar N/A 313.2 lb |
| 3 3/16 3 3/16/Asset/1018-Cold-Finished-Rounds.JPG | Estimated Weight per Foot N/A 27.16 lb | Estimated Weight 12-Ft. Bar N/A 325.9 lb |
| 3 1/4 3 1/4/Asset/1018-Cold-Finished-Rounds.JPG | Estimated Weight per Foot N/A 28.23 lb | Estimated Weight 12-Ft. Bar N/A 338.8 lb |
| 3 3/8 3 3/8/Asset/1018-Cold-Finished-Rounds.JPG | Estimated Weight per Foot N/A 30.45 lb | Estimated Weight 12-Ft. Bar N/A 365.4 lb |
| 3 1/2 3 1/2/Asset/1018-Cold-Finished-Rounds.JPG | Estimated Weight per Foot N/A 32.74 lb | Estimated Weight 12-Ft. Bar N/A 392.9 lb |
| 3 3/4 3 3/4/Asset/1018-Cold-Finished-Rounds.JPG | Estimated Weight per Foot N/A 37.59 lb | Estimated Weight 12-Ft. Bar N/A 451.0 lb |
| 3 15/16 3 15/16/Asset/1018-Cold-Finished-Rounds.JPG | Estimated Weight per Foot N/A 41.44 lb | Estimated Weight 12-Ft. Bar N/A 497.3 lb |
| 4 4/Asset/1018-Cold-Finished-Rounds.JPG | Estimated Weight per Foot N/A 42.77 lb | Estimated Weight 12-Ft. Bar N/A 513.2 lb |
