| 摘要 |
PROBLEM TO BE SOLVED: To provide a steel for automobile exhaust gas passage member which has excellent high temperature strength and toughness in the welded part and with which a degree of freedom about an appropriate pipe-making condition can be widely secured. SOLUTION: The ferritic stainless steel for automobile exhaust gas passage member has a composition composed of, by mass,≤0.03% C,≤1% Si,≤1.5% Mn,≤0.6% Ni, 10-20% Cr,≤0.5% Nb, 0.05-0.3% Ti, >0.03 to 0.12% Al, >1 to 2% Cu,≤0.2% V,≤0.03% N, 0.0005-0.02% B,≤0.01% O and the balance Fe with inevitable impurities and satisfies relations of Nb≥8(C+N) and 0.02≤Al-(54/48)O≤0.1. COPYRIGHT: (C)2008,JPO&INPIT
|
