HIGH-CARBON STEEL WIRE ROD FOR HYPERFINE WIRE HAVING HIGH STRENGTH, TOUGHNESS AND DUCTILITY

摘要

PURPOSE:To obtain a high-carbon steel wire rod for a hyperfine wire having high strength, toughness and ductility by adding specified amounts of C, Si, Mn, P, S, Cr and Al to steel. CONSTITUTION:The composition of a high-carbon steel wire rod for a hyperfine wire is composed of, by weight, 0.6-0.9% C, 0.15-1% Si, 0.3% Mn, 0.02% P, 0.02% S, 0.15-0.5% Cr, 0.002% Al and the balance Fe with inevitable impurities. When the wire rod is used, a hyperfine wire and a steel cord each having high strength, toughness and ductility can be manufactured. The amount of secondary starting materials such as ferromanganese used in the manufacture of steel can be reduced, so the cost of the manufacture of the wire rod can be reduced.