| 摘要 |
PROBLEM TO BE SOLVED: To provide a heat resistant steel that has improved long-term creep rupture life and is superior in high temperature properties and durability.SOLUTION: A heat resistant steel includes, in mass%, C: 0.05-0.2%, Si: 0.1% or less, Mn: more than 0.1% and 0.7% or less, Ni: 1% or less, Cr: 8.5% to less than 10%, Mo: 1% or less, V: 0.05-0.3%, Co: 2% or less, W: 1-5%, N: 0.01% to less than 0.014%, Nb: 0.01-0.15%, and B: 0.003-0.03%, with the balance being Fe and inevitable impurities. |
