HIGH-HEAT RESISTANCE COLD-ROLLED STEEL SHEET AND A MANUFACTURING METHOD THEREOF TO OBTAIN SHAPE FIXABILITY OF HIGH-TEMPERATURE APPLICABLE PRODUCTS

摘要

PURPOSE: A high-heat resistance cold-rolled steel sheet and a manufacturing method thereof are provided to prevent the elongation of a yield point and obtain excellent workability by enhancing anti-aging properties using precipitation of solid elements.;CONSTITUTION: A high-heat resistance cold-rolled steel sheet comprises 0.002-0.010wt.% of C, 0.05-0.12wt.% of Ti, 0.07-0.55wt.% of Mn, 0.01-0.10wt.% of Al, 0.003-0.020wt.% of P, 0.002-0.006wt.% of N, 0.015wt.% or less of S, and the remaining amount of Fe and inevitable impurities, wherein the atomic ratio of Ti to C is 2.8-4.5. A Ti-based carbide precipitate is formed in the cold-rolled steel sheet.;COPYRIGHT KIPO 2013