Patent ID: 7914732

Claim:
A ferritic stainless steel cast iron consisting of: C: 0.20 to 0.37 mass %; Si: 1.00 to 3.00 mass %; Mn: 0.30 to 3.00 mass %; Cr: 12.0 to 22.0 mass %; and W: 0.10 to 5.00 mass %; one of Nb and V, or both of Nb and V in total: 1.5 to 5.0 mass %; optionally consisting of Cu: 0.02 to 2.00 mass %, Co: 0.01 to 5.00 mass %, Mo: 0.05 to 5.00 mass %, S: 0.01 to 0.50 mass %, N: 0.01 to 0.15 mass %, P: 0.50 mass % or less, B: 0.005 to 0.100 mass %, Ca: 0.005 to 0.100 mass %, Ta: 0.01 to 1.00 mass %, Ti: 0.01 to 1.00 mass %, Al: 0.01 to 1.00 mass %, Zr: 0.01 to 0.20 mass %, and one or more of Sc, Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu in total of 0.005 to 0.100 mass % and balance Fe; wherein the ferritic stainless steel cast iron satisfying the following formula (1): 1400≦1562.3−{133WC+14WSi+5WMn+10(WNb+WV)}≦1480 (1) wherein, WC (mass %), WSi (mass %), WMn (mass %), WNb (mass %) and WV (mass %) are contents of C, Si, Mn, Nb and V, respectively.