Patent ID: 7655101

Claim:
A steel alloy for cuffing tools, wherein the alloy consists of, in percent by weight based on a total weight of the alloy: C=from about 0.76 to about 0.89 Si=from about 0.41 to about 0.59 Mn=from about 0.15 to about 0.39 Cr=from about 3.60 to 4.60 Mo=from about 2.00 to 3.15 W=from about 1.50 to about 2.70 V=from about 0.80 to about 1.49 Al=from about 0.60 to about 1.40 P=up to 0.03 S=from about 0.001 to about 0.30 N=from about 0.01 to about 0.10, remainder Fe and impurity elements.