Alloy Steels
43xx sheets of steel are low alloy steels containing Fe, Ni, Cr, and Mo.
Alloy Steels | 4340 Steel composition
Fe - 0.4 %C, 0.7 %Mn, 0.2% Si, 1.8%Ni, 0.8% Cr, 0.25% Mo. The alloy may not contain more than 0.04% of either
S or P. The material has a tensile strength between 980 and 1960 MPa, the yield stress of 895 to 1570 MPa, and an elongation to fracture between 21 and 11%.
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