| 摘要 |
PURPOSE:To provide creep strength higher than that of a generally used steel to a dead soft steel by adding proper amounts of Ti and P to the dead soft steel having a specified composition. CONSTITUTION:The composition of an austenitic stainless steel is composed of, by weight, <=0.01% C, <=1.0% Si, <=2.0% Mn, 0.03-0.08% P, <=0.03% S, 10-18% Ni, 13-20% Cr, 1.5-2.5% Ti, <=0.02% T.N and the balance Fe with inevitable impurities. The proper amount of Ti added is effective in improving the creep strength of the dead soft steel and the weldability of the steel is not deteriorated by the proper amount of P added. The corrosion resistance and the strength at high temp. are effectively improved by further adding 1.5-3.0% Mo and/or 2.5-3.5% Cu.
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