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This chromium-molybdenum alloy is one of the most widely used aircraft steels because of its combination of weldability, ease of fabrication, and mild hardenability. In relatively thin sections it will respond to heat treatment to high strength levels and yet in the normalized condition it has adequate strength for many applications. When resistance to wear and abrasion is required, it may be nitrided.
This grade is a quality product melted under the best steelmaking practices for aircraft quality steels. It is vacuum degassed to meet the magnetic particle inspection standards of AMS 2301.

UNS G41300, MIL-S-6758 - AMS 6370 - AMS 2301

Physical Conditions F
Surface Condition 4

Stock Lengths 12'
Unit of Measure
1 2 

Size

Estimated Weight per Foot

Estimated Weight 12-Ft. Bar

1/4 x 1/2 N/A .4254 lb N/A 5.105 lb
1/4 x 3/4 N/A .6381 lb N/A 7.657 lb
1/4 x 1 N/A .8508 lb N/A 10.21 lb
1/4 x 1 1/4 N/A 1.064 lb N/A 12.76 lb
1/4 x 1 1/2 N/A 1.276 lb N/A 15.31 lb
1/4 x 1 3/4 N/A 1.489 lb N/A 17.87 lb
1/4 x 2 N/A 1.702 lb N/A 20.42 lb
1/4 x 2 1/2 N/A 2.127 lb N/A 25.52 lb
1/4 x 3 N/A 2.552 lb N/A 30.63 lb
1/4 x 4 N/A 3.403 lb N/A 40.84 lb
1/4 x 5 N/A 4.254 lb N/A 51.05 lb
3/8 x 1/2 N/A .6381 lb N/A 7.657 lb
3/8 x 3/4 N/A .9572 lb N/A 11.49 lb
3/8 x 1 N/A 1.276 lb N/A 15.31 lb
3/8 x 1 1/4 N/A 1.595 lb N/A 19.14 lb
3/8 x 1 1/2 N/A 1.914 lb N/A 22.97 lb
3/8 x 1 3/4 N/A 2.233 lb N/A 26.80 lb
3/8 x 2 N/A 2.552 lb N/A 30.63 lb
3/8 x 2 1/2 N/A 3.191 lb N/A 38.29 lb
3/8 x 3 N/A 3.829 lb N/A 45.94 lb
3/8 x 4 N/A 5.105 lb N/A 61 26 lb
3/8 x 5 N/A 6.381 lb N/A 76.57 lb
3/8 x 6 N/A 7.657 lb N/A 91 89 lb
1/2 x 3/4 N/A 1.276 lb N/A 15.31 lb
1/2 x 1 N/A 1.702 lb N/A 20.42 lb
1/2 x 1 1/4 N/A 2.127 lb N/A 25.52 lb
1/2 x 1 1/2 N/A 2.552 lb N/A 30.63 lb
1/2 x 1 3/4 N/A 2.978 lb N/A 35.73 lb
1/2 x 2 N/A 3.403 lb N/A 40.84 lb
1/2 x 2 1/2 N/A 4.254 lb N/A 51.05 lb
1/2 x 3 N/A 5.105 lb N/A 61.26 lb
1/2 x 4 N/A 6.806 lb N/A 81.68 lb
1/2 x 5 N/A 8.508 lb N/A 102.1 lb
1/2 x 6 N/A 10.21 lb N/A 122.5 lb
5/8 x 1 N/A 2.127 lb N/A 25.52 lb
5/8 x 1 1/4 N/A 2.659 lb N/A 31.91 lb
5/8 x 1 1/2 N/A 3.191 lb N/A 38.29 lb
5/8 x 1 3/4 N/A 3.722 lb N/A 44.67 lb
5/8 x 2 N/A 4.254 lb N/A 51.05 lb
5/8 x 2 1/2 N/A 5.318 lb N/A 63.81 lb
5/8 x 3 N/A 6.381 lb N/A 76.57 lb
5/8 x 4 N/A 8.508 lb N/A 102.1 lb
5/8 x 5 N/A 10.64 lb N/A 127.6 lb
3/4 x 1 N/A 2.552 lb N/A 30.63 lb
3/4 x 1 1/4 N/A 3.191 lb N/A 38.29 lb
3/4 x 1 1/2 N/A 3.829 lb N/A 45.94 lb
3/4 x 1 3/4 N/A 4.467 lb N/A 53.60 lb
3/4 x 2 N/A 5.105 lb N/A 61.26 lb
3/4 x 2 1/2 N/A 6.381 lb N/A 76.57 lb
3/4 x 2 3/4 N/A 7.019 lb N/A 84.23 lb
Unit of Measure
1 2