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All Categories > Alloyed Bars and Plates > Hot Rolled Alloy Steels > 4340 Hot Rolled Annealed Alloy Steel > 4340 Hot Rolled Annealed Alloy Steel - Rounds > View Items  
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4340 Hot Rolled Annealed Alloy Steel - Rounds

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This is the "king" of the hardening grades of constructional alloy steels. Because of richer alloy content, 4340 possesses much deeper hardenability than the 4100 series. This advantage is realized principally where high strength is required in heavy sections. In addition, unusually high hardenability insures maximum toughness and ductility at the desired strength level. The fatigue-tensile ratio makes this grade ideal for highly stressed parts. It maintains its strength, ductility, and toughness at relatively high temperatures. It has remarkable non-distorting properties for an alloy steel. Thus, for high strength in heavy sections, or for highly stressed parts operating under the most severe conditions, or where the greatest margin of safety is desired, this is the steel to use.

Nickel-Chromium-Molybdenum Steel

UNS G43400

Machine Straightened

Maximum Brinell 235

Stock Lengths 20' Approx.


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Size

Estimated Weight per Foot

Estimated Weight 20-Ft. Bar

4 42.77 lb 855.3 lb
4 1/4 48.28 lb 965.6 lb
4 1/2 54.13 lb 1083 lb
4 3/4 60.31 lb 1206 lb
5 66.82 lb 1336 lb
5 1/4 73.67 lb 1473 lb
5 1/2 80.86 lb 1617 lb
5 3/4 88.37 lb 1767 lb
6 96.22 lb 1924 lb
6 1/4 104.4 lb 2088 lb
6 1/2 112.9 lb 2259 lb
6 3/4 121.8 lb 2436 lb
7 131.0 lb 2619 lb
7 1/4 140.5 lb 2810 lb
7 1/2 150.4 lb 3007 lb
7 3/4 160.5 lb 3211 lb
8 171.1 lb 3421 lb
8 1/4 181.9 lb 3638 lb
8 1/2 193.1 lb 3862 lb
8 3/4 204.6 lb 4093 lb
9 216.5 lb 4330 lb
9 1/4 228.7 lb 4574 lb
9 1/2 241.2 lb 4824 lb
9 3/4 254.1 lb 5082 lb
10 267.3 lb 5346 lb
  Results 26 - 50 of 58 1 2 3 
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