摘要:
A steel wire consisting essentially of 0.9 to 1.10% carbon, 0.3 to 0.6% manganese, not more than 0.01% sulfur, not more than 0.005% phosphorus, not more than 0.1% silicon, and not more than 0.002% nitrogen, cold drawn to a diameter of from 0.25 to 0.001 inch to provide a high tensile strength within the range 350 to 700 K.s.i. and yet exhibiting sufficient ductility as to be characterized by a ductile mode fracture.