| 摘要 |
A ferritic heat-resistant cast steel with excellent machinability, containing, by mass, 0.32 to 0.48% C, at most 0.85% Si, 0.1 to 2% Mn, at most 1.5% Ni, 16 to 23% Cr, 3.2 to 5% Nb, at most 0.15% N, 0.05 to 0.2% S, 0.01 to 0.08% Al and balance Fe and unavoidable impurities with the Nb/C ratio being 9 to 11.5; and an exhaust component which consists of the same. |
