| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a high corrosion resistant austenitic stainless steel having excellentσembrittlement resistance characteristics and weldability.SOLUTION: There is provided the high corrosion resistant austenitic stainless steel excellent inσembrittlement resistance characteristics and weldability, having a composition containing C:0.005 to 0.030 mass%, Ni:10.00 to 30.00 mass%, Cr:17.00 to 25.00 mass%, Mo:2.00 to 6.00 mass% or less N:0.01 to 0.30 mass%, P:0.005 to 0.030 mass%, S:0.0005 to 0.0015 mass%, REM, i.e. La, Ce and Nd≤0.050 mass% or less and the balance Fe with inevitable impurities and satisfying following two formulae. 3×Cr mass%+5×Mo mass%-Ni mass%-3×N mass%≤60...(1) 3×P mass%+S mass%-REM mass%≤0.050...(2)</p> |
