| 摘要 |
PURPOSE: A high heat-resistance cold-rolled steel sheet with excellent processability, heat-resistance, and discoloration resistance and a manufacturing method thereof are provided to optimize processing conditions by reducing the addition of alloying elements. CONSTITUTION: A high heat-resistance cold-rolled steel sheet with excellent processability, heat-resistance, and discoloration resistance comprises C 0.002~0.005 weight%, Nb 0.02~0.06 weight%, Sn 0.05~0.25 weight%, Mn 0.10~0.35 weight%, Al 0.02~0.08 weight%, P 0.003~0.020 weight%, N 0.002~0.006 weight%, S 0.015 weight%, Fe and inevitable impurities. The value of atomic ratio Nb/C is 0.8~2.0. |
