4140 Aircraft Annealed & Cold Finished Alloy - Rounds
4140 Aircraft Alloy Bars
This chromium molybdenum alloy is a deep hardening steel used where strength and impact toughness are required. It has high fatigue strength making it suitable for critical stressed applications at normal as well as elevated temperatures. For increased resistance to wear and abrasion, it may be nitrided.
This grade is a quality product melted under the best of steelmaking practices for aircraft quality steels. It is vacuum degassed to meet the magnetic particle inspection standards of AMS 2301.
UNS G41400, MIL-S-5626 - AMS 6382 - AMS 2301
Color Marking:
Normalized Bars—Ends painted Gray
Annealed Bars—Ends painted Brown
Physical Conditions C
Surface Condition 4
Stock Lengths: 12' and 20'
Maximum Brinell 241
This grade is a quality product melted under the best of steelmaking practices for aircraft quality steels. It is vacuum degassed to meet the magnetic particle inspection standards of AMS 2301.
UNS G41400, MIL-S-5626 - AMS 6382 - AMS 2301
Color Marking:
Normalized Bars—Ends painted Gray
Annealed Bars—Ends painted Brown
Physical Conditions C
Surface Condition 4
Stock Lengths: 12' and 20'
Maximum Brinell 241
Size |
Estimated Weight per Foot |
Estimated Weight 12-Ft. Bar |
|---|---|---|
| 1/4 | Estimated Weight per Foot N/A .1671 lb | Estimated Weight 12-Ft. Bar N/A 2.005 lb |
| 5/16 | Estimated Weight per Foot N/A .2610 lb | Estimated Weight 12-Ft. Bar N/A 3.132 lb |
| 3/8 | Estimated Weight per Foot N/A .3759 lb | Estimated Weight 12-Ft. Bar N/A 4.510 lb |
| 7/16 | Estimated Weight per Foot N/A .5116 lb | Estimated Weight 12-Ft. Bar N/A 6.139 lb |
| 1/2 | Estimated Weight per Foot N/A .6682 lb | Estimated Weight 12-Ft. Bar N/A 8.019 lb |
| 9/16 | Estimated Weight per Foot N/A .8457 lb | Estimated Weight 12-Ft. Bar N/A 10.15 lb |
| 5/8 | Estimated Weight per Foot N/A 1.044 lb | Estimated Weight 12-Ft. Bar N/A 12.53 lb |
| 11/16 | Estimated Weight per Foot N/A 1.263 lb | Estimated Weight 12-Ft. Bar N/A 15.16 lb |
| 3/4 | Estimated Weight per Foot N/A 1.504 lb | Estimated Weight 12-Ft. Bar N/A 18.04 lb |
| 13/16 | Estimated Weight per Foot N/A 1.765 lb | Estimated Weight 12-Ft. Bar N/A 21.17 lb |
| 7/8 | Estimated Weight per Foot N/A 2.046 lb | Estimated Weight 12-Ft. Bar N/A 24.56 lb |
| 15/16 | Estimated Weight per Foot N/A 2.349 lb | Estimated Weight 12-Ft. Bar N/A 28.19 lb |
| 1 | Estimated Weight per Foot N/A 2.673 lb | Estimated Weight 12-Ft. Bar N/A 32.07 lb |
| 1 1/16 | Estimated Weight per Foot N/A 3.017 lb | Estimated Weight 12-Ft. Bar N/A 36.21 lb |
| 1 1/8 | Estimated Weight per Foot N/A 3.383 lb | Estimated Weight 12-Ft. Bar N/A 40.59 lb |
| 1 3/16 | Estimated Weight per Foot N/A 3.769 lb | Estimated Weight 12-Ft. Bar N/A 45.23 lb |
| 1 1/4 | Estimated Weight per Foot N/A 4.176 lb | Estimated Weight 12-Ft. Bar N/A 50.12 lb |
| 1 5/16 | Estimated Weight per Foot N/A 4.604 lb | Estimated Weight 12-Ft. Bar N/A 55.25 lb |
| 1 3/8 | Estimated Weight per Foot N/A 5.053 lb | Estimated Weight 12-Ft. Bar N/A 60.64 lb |
| 1 7/16 | Estimated Weight per Foot N/A 5.523 lb | Estimated Weight 12-Ft. Bar N/A 66.28 lb |
| 1 1/2 | Estimated Weight per Foot N/A 6.014 lb | Estimated Weight 12-Ft. Bar N/A 72.17 lb |
| 1 5/8 | Estimated Weight per Foot N/A 7.058 lb | Estimated Weight 12-Ft. Bar N/A 84.70 lb |
| 1 3/4 | Estimated Weight per Foot N/A 8.186 lb | Estimated Weight 12-Ft. Bar N/A 98.23 lb |
| 1 7/8 | Estimated Weight per Foot N/A 9.397 lb | Estimated Weight 12-Ft. Bar N/A 112.8 lb |
| 2 | Estimated Weight per Foot N/A 10.69 lb | Estimated Weight 12-Ft. Bar N/A 128.3 lb |
| 2 1/4 | Estimated Weight per Foot N/A 13.53 lb | Estimated Weight 12-Ft. Bar N/A 162.4 lb |
| 2 1/2 | Estimated Weight per Foot N/A 16.71 lb | Estimated Weight 12-Ft. Bar N/A 200.5 lb |
| 2 3/4 | Estimated Weight per Foot N/A 20.21 lb | Estimated Weight 12-Ft. Bar N/A 242.6 lb |
| 3 | Estimated Weight per Foot N/A 24.06 lb | Estimated Weight 12-Ft. Bar N/A 288.7 lb |
