4140 Aircraft Hot Rolled Normalized 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 D
Surface Condition 1
Stock Lengths: 12' and 20'
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 D
Surface Condition 1
Stock Lengths: 12' and 20'
Size |
Estimated Weight per Foot |
Estimated Weight 20-Ft. Bar |
|---|---|---|
| 1 | Estimated Weight per Foot N/A 2.673 lb | Estimated Weight 20-Ft. Bar N/A 53.46 lb |
| 1 1/8 | Estimated Weight per Foot N/A 3.383 lb | Estimated Weight 20-Ft. Bar N/A 67.66 lb |
| 1 1/4 | Estimated Weight per Foot N/A 4.176 lb | Estimated Weight 20-Ft. Bar N/A 83.53 lb |
| 1 3/8 | Estimated Weight per Foot N/A 5.053 lb | Estimated Weight 20-Ft. Bar N/A 101.1 lb |
| 1 1/2 | Estimated Weight per Foot N/A 6.014 lb | Estimated Weight 20-Ft. Bar N/A 120.3 lb |
| 1 5/8 | Estimated Weight per Foot N/A 7.058 lb | Estimated Weight 20-Ft. Bar N/A 141.2 lb |
| 1 3/4 | Estimated Weight per Foot N/A 8.186 lb | Estimated Weight 20-Ft. Bar N/A 163.7 lb |
| 1 7/8 | Estimated Weight per Foot N/A 9.397 lb | Estimated Weight 20-Ft. Bar N/A 187.9 lb |
| 2 | Estimated Weight per Foot N/A 10.69 lb | Estimated Weight 20-Ft. Bar N/A 213.8 lb |
| 2 1/8 | Estimated Weight per Foot N/A 12.07 lb | Estimated Weight 20-Ft. Bar N/A 241.4 lb |
| 2 1/4 | Estimated Weight per Foot N/A 13.53 lb | Estimated Weight 20-Ft. Bar N/A 270.6 lb |
| 2 3/8 | Estimated Weight per Foot N/A 15.08 lb | Estimated Weight 20-Ft. Bar N/A 301.5 lb |
| 2 1/2 | Estimated Weight per Foot N/A 16.71 lb | Estimated Weight 20-Ft. Bar N/A 334.1 lb |
| 2 5/8 | Estimated Weight per Foot N/A 18.42 lb | Estimated Weight 20-Ft. Bar N/A 368.4 lb |
| 2 3/4 | Estimated Weight per Foot N/A 20.21 lb | Estimated Weight 20-Ft. Bar N/A 404.3 lb |
| 2 7/8 | Estimated Weight per Foot N/A 22.09 lb | Estimated Weight 20-Ft. Bar N/A 441.9 lb |
| 3 | Estimated Weight per Foot N/A 24.06 lb | Estimated Weight 20-Ft. Bar N/A 481.1 lb |
| 3 1/4 | Estimated Weight per Foot N/A 28.23 lb | Estimated Weight 20-Ft. Bar N/A 564.6 lb |
| 3 1/2 | Estimated Weight per Foot N/A 32.74 lb | Estimated Weight 20-Ft. Bar N/A 654.8 lb |
| 3 3/4 | Estimated Weight per Foot N/A 37.59 lb | Estimated Weight 20-Ft. Bar N/A 751.7 lb |
| 4 | Estimated Weight per Foot N/A 42.77 lb | Estimated Weight 20-Ft. Bar N/A 855.3 lb |
| 4 1/4 | Estimated Weight per Foot N/A 48.28 lb | Estimated Weight 20-Ft. Bar N/A 956.6 lb |
| 4 1/2 | Estimated Weight per Foot N/A 54.13 lb | Estimated Weight 20-Ft. Bar N/A 1083 lb |
| 4 3/4 | Estimated Weight per Foot N/A 60.31 lb | Estimated Weight 20-Ft. Bar N/A 1206 lb |
| 5 | Estimated Weight per Foot N/A 66.82 lb | Estimated Weight 20-Ft. Bar N/A 1336 lb |
| 5 1/4 | Estimated Weight per Foot N/A 73.67 lb | Estimated Weight 20-Ft. Bar N/A 1473 lb |
| 5 1/2 | Estimated Weight per Foot N/A 80.86 lb | Estimated Weight 20-Ft. Bar N/A 1617 lb |
| 6 | Estimated Weight per Foot N/A 96.22 lb | Estimated Weight 20-Ft. Bar N/A 1924 lb |
| 6 1/4 | Estimated Weight per Foot N/A 104.4 lb | Estimated Weight 20-Ft. Bar N/A 2088 lb |
| 6 1/2 | Estimated Weight per Foot N/A 112.9 lb | Estimated Weight 20-Ft. Bar N/A 2259 lb |
| 7 | Estimated Weight per Foot N/A 131.0 lb | Estimated Weight 20-Ft. Bar N/A 2619 lb |
| 7 1/2 | Estimated Weight per Foot N/A 150.4 lb | Estimated Weight 20-Ft. Bar N/A 3007 lb |
| 8 | Estimated Weight per Foot N/A 171.1 lb | Estimated Weight 20-Ft. Bar N/A 3421 lb |
| 8 1/2 | Estimated Weight per Foot N/A 193.1 lb | Estimated Weight 20-Ft. Bar N/A 3862 lb |
| 9 | Estimated Weight per Foot N/A 216.5 lb | Estimated Weight 20-Ft. Bar N/A 4330 lb |
| 10 | Estimated Weight per Foot N/A 267.3 lb | Estimated Weight 20-Ft. Bar N/A 5346 lb |
| 10 1/2 | Estimated Weight per Foot N/A 294.7 lb | Estimated Weight 20-Ft. Bar N/A 5894 lb |
| 11 | Estimated Weight per Foot N/A 323.4 lb | Estimated Weight 20-Ft. Bar N/A 6468 lb |
| 12 | Estimated Weight per Foot N/A 384.9 lb | Estimated Weight 20-Ft. Bar N/A 7698 lb |
