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, andmore
Unit of Measure
Items
Rounds

4340 Hot Rolled Annealed Alloy Steel - Rounds

Rounds

4340 Hot Rolled Annealed Alloy Steel - Rounds

Rounds

4340 Hot Rolled Annealed Alloy Steel - Rounds

Rounds

4340 Hot Rolled Annealed Alloy Steel - Rounds

Rounds

4340 Hot Rolled Annealed Alloy Steel - Rounds
Estimated Weight per Foot N/A 1.263 lb N/A 1.504 lb N/A 2.046 lb N/A 2.673 lb N/A 3.383 lb
Estimated Weight 20-Ft. Bar N/A 25.27 lb N/A 30.07 lb N/A 40.93 lb N/A 53.46 lb N/A 67.66 lb