3.000 (3 inch) x 16 inches, 4340 Q&T Alloy Steel Round Rod, Hot Rolled

4340 HR Q&T is primarily used for heavily stressed parts that must operate under strenuous conditions. The Quenching boosts the hardness of the steel, while the tempering helps to make sure that it isn't too brittle to work with. 4340 Q&T has been quenched, tempered and stress relieved.