E-4340 Aircraft Normalized & Tempered Cold Finished Alloy

This chromium nickel molybdenum alloy is a widely used deep-hardening constructional steel. It is used at a variety of strength levels and at each level possesses remarkable ductility and toughness. With its high alloy content uniform hardness is developed by heat treatment in relatively heavy sections. High fatigue strength makes E-4340 ideal for highly stressed parts. It maintains its strength and hardness at elevated temperatures.

This grade is available as electric furnace vacuum degassed steel to meet the high aircraft quality standards of AMS 2301. Thus, it is suitable for the fabrication of parts which may be subjected to magnetic particle inspection.

This grade is also available as a Premium Aircraft Quality product. The regular aircraft quality material is remelted in a vacuum using consumable electrode practice. This results in a much cleaner steel meeting the magnetic particle test requirements of AMS-2300 and insures a steel of the highest quality with excellent transverse ductility and toughness at high strength levels.

UNS G43406, MIL-S-5000 - AMS 2301

Color Marking: Ends painted Yellow

Physical Conditions E
Surface Condition 4

Stock Lengths: 12' and 20'

Maximum Brinell 265

Size	Estimated Weight per Foot	Estimated Weight 12-Ft. Bar
1/4	N/A .1671 lb	N/A 2.005 lb
5/16	N/A 2610 lb	N/A 3.132 lb
3/8	N/A .3759 lb	N/A 4.510 lb
7/16	N/A .5116 lb	N/A 6.139 lb
1/2	N/A .6682 lb	N/A 8.019 lb
9/16	N/A .8457 lb	N/A 10.15 lb
5/8	N/A 1.044 lb	N/A 12.53 lb
11/16	N/A 1.263 lb	N/A 15.16 lb
3/4	N/A 1.504 lb	N/A 18.04 lb
13/16	N/A 1.765 lb	N/A 21.17 lb
7/8	N/A 2.046 lb	N/A 24.56 lb
15/16	N/A 2.349 lb	N/A 28.19 lb
1	N/A 2.673 lb	N/A 32.07 lb
1 1/16	N/A 3.017 lb	N/A 36.21 lb
1 1/8	N/A 3.383 lb	N/A 40.59 lb
1 3/16	N/A 3.769 lb	N/A 45.23 lb
1 1/4	N/A 4.176 lb	N/A 50.12 lb
1 5/16	N/A 4.604 lb	N/A 55.25 lb
1 3/8	N/A 5.053 lb	N/A 60.64 lb
1 7/16	N/A 5.523 lb	N/A 66.28 lb
1 1/2	N/A 6.014 lb	N/A 72.17 lb
1 9/16	N/A 6.526 lb	N/A 78.31 lb
1 5/8	N/A 7.058 lb	N/A 84.70 lb
1 3/4	N/A 8.186 lb	N/A 98.23 lb
1 7/8	N/A 9.397 lb	N/A 112.8 lb
2	N/A 10.69 lb	N/A 128.3 lb
2 1/8	N/A 12.07 lb	N/A 144.8 lb
2 1/4	N/A 13.53 lb	N/A 162.4 lb
2 3/8	N/A 15.08 lb	N/A 180.9 lb
2 1/2	N/A 16.71 lb	N/A 200.5 lb
2 3/4	N/A 20.21 lb	N/A 242.6 lb
2 7/8	N/A 22.09 lb	N/A 265.1 lb
3	N/A 24.06 lb	N/A 288.7 lb
3 1/4	N/A 28.23 lb	N/A 338.8 lb
3 1/2	N/A 32.74 lb	N/A 392.9 lb
3 3/4	N/A 37.59 lb	N/A 451.0 lb
4	N/A 42.77 lb	N/A 513.2 lb

1/4

N/A .1671 lb

N/A 2.005 lb

5/16

N/A 2610 lb

N/A 3.132 lb

3/8

N/A .3759 lb

N/A 4.510 lb

7/16

N/A .5116 lb

N/A 6.139 lb

1/2

N/A .6682 lb

N/A 8.019 lb

9/16

N/A .8457 lb

N/A 10.15 lb

5/8

N/A 1.044 lb

N/A 12.53 lb

11/16

N/A 1.263 lb

N/A 15.16 lb

3/4

N/A 1.504 lb

N/A 18.04 lb

13/16

N/A 1.765 lb

N/A 21.17 lb

7/8

N/A 2.046 lb

N/A 24.56 lb

15/16

N/A 2.349 lb

N/A 28.19 lb

N/A 2.673 lb

N/A 32.07 lb

1 1/16

N/A 3.017 lb

N/A 36.21 lb

1 1/8

N/A 3.383 lb

N/A 40.59 lb

1 3/16

N/A 3.769 lb

N/A 45.23 lb

1 1/4

N/A 4.176 lb

N/A 50.12 lb

1 5/16

N/A 4.604 lb

N/A 55.25 lb

1 3/8

N/A 5.053 lb

N/A 60.64 lb

1 7/16

N/A 5.523 lb

N/A 66.28 lb

1 1/2

N/A 6.014 lb

N/A 72.17 lb

1 9/16

N/A 6.526 lb

N/A 78.31 lb

1 5/8

N/A 7.058 lb

N/A 84.70 lb

1 3/4

N/A 8.186 lb

N/A 98.23 lb

1 7/8

N/A 9.397 lb

N/A 112.8 lb

N/A 10.69 lb

N/A 128.3 lb

2 1/8

N/A 12.07 lb

N/A 144.8 lb

2 1/4

N/A 13.53 lb

N/A 162.4 lb

2 3/8

N/A 15.08 lb

N/A 180.9 lb

2 1/2

N/A 16.71 lb

N/A 200.5 lb

2 3/4

N/A 20.21 lb

N/A 242.6 lb

2 7/8

N/A 22.09 lb

N/A 265.1 lb

N/A 24.06 lb

N/A 288.7 lb

3 1/4

N/A 28.23 lb

N/A 338.8 lb

3 1/2

N/A 32.74 lb

N/A 392.9 lb

3 3/4

N/A 37.59 lb

N/A 451.0 lb

N/A 42.77 lb

N/A 513.2 lb

Product Catalog

Size

Estimated Weight per Foot

Estimated Weight 12-Ft. Bar