| 摘要 |
PROBLEM TO BE SOLVED: To provide Cr-containing steel which has excellent high temperature strength, and is soft at room temperature. SOLUTION: The Cr-containing steel has a composition comprising, by mass,≤0.02% C,≤2% Si,≤2% Mn,≤0.06% P,≤0.02% S,≤0.1% Al,≤1% Ni, >6 to 40% Cr,≤0.02% N, >1.0 to 3% Mo, >1.0 to 5% W, >3.0 to 8% [Mo]+[W] and 0.0001 to 0.01% B, also containing one or more kinds selected from≤1% Ti,≤1% V and≤0.5% Zr so as to satisfy 5×([C]+[N])≤[Ti]+[V]+[Zr]≤1, and the balance Fe with inevitable impurities. COPYRIGHT: (C)2003,JPO
|
