4140 Aircraft Hot Rolled Normalized Alloy

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'

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

N/A 2.673 lb

N/A 53.46 lb

1 1/8

N/A 3.383 lb

N/A 67.66 lb

1 1/4

N/A 4.176 lb

N/A 83.53 lb

1 3/8

N/A 5.053 lb

N/A 101.1 lb

1 1/2

N/A 6.014 lb

N/A 120.3 lb

1 5/8

N/A 7.058 lb

N/A 141.2 lb

1 3/4

N/A 8.186 lb

N/A 163.7 lb

1 7/8

N/A 9.397 lb

N/A 187.9 lb

N/A 10.69 lb

N/A 213.8 lb

2 1/8

N/A 12.07 lb

N/A 241.4 lb

2 1/4

N/A 13.53 lb

N/A 270.6 lb

2 3/8

N/A 15.08 lb

N/A 301.5 lb

2 1/2

N/A 16.71 lb

N/A 334.1 lb

2 5/8

N/A 18.42 lb

N/A 368.4 lb

2 3/4

N/A 20.21 lb

N/A 404.3 lb

2 7/8

N/A 22.09 lb

N/A 441.9 lb

N/A 24.06 lb

N/A 481.1 lb

3 1/4

N/A 28.23 lb

N/A 564.6 lb

3 1/2

N/A 32.74 lb

N/A 654.8 lb

3 3/4

N/A 37.59 lb

N/A 751.7 lb

N/A 42.77 lb

N/A 855.3 lb

4 1/4

N/A 48.28 lb

N/A 956.6 lb

4 1/2

N/A 54.13 lb

N/A 1083 lb

4 3/4

N/A 60.31 lb

N/A 1206 lb

N/A 66.82 lb

N/A 1336 lb

5 1/4

N/A 73.67 lb

N/A 1473 lb

5 1/2

N/A 80.86 lb

N/A 1617 lb

N/A 96.22 lb

N/A 1924 lb

6 1/4

N/A 104.4 lb

N/A 2088 lb

6 1/2

N/A 112.9 lb

N/A 2259 lb

N/A 131.0 lb

N/A 2619 lb

7 1/2

N/A 150.4 lb

N/A 3007 lb

N/A 171.1 lb

N/A 3421 lb

8 1/2

N/A 193.1 lb

N/A 3862 lb

N/A 216.5 lb

N/A 4330 lb

N/A 267.3 lb

N/A 5346 lb

10 1/2

N/A 294.7 lb

N/A 5894 lb

N/A 323.4 lb

N/A 6468 lb

N/A 384.9 lb

N/A 7698 lb

Size

Estimated Weight per Foot

Estimated Weight 20-Ft. Bar