| 摘要 |
PURPOSE:To improve the corrosion resistance and hot workability by specifying the amounts of C, Si, Mn, Cr, Ni, Mo and B and reducing the amounts of N, O, P and S to a prescribed value or below each. CONSTITUTION:This austenitic stainless steel consists of, by weight, <=0.03% C, <=2% Si, <=1% Mn, 19-30% Cr, 20-30% Ni, 3.5-7% Mo, <=0.01% B, <=0.4% N, <=0.006% O, <=0.04% P, <=0.005% S and the balance Fe. In the composition, conditions represented by formulae Cr+3Mo+2ON>=40 and Cr+2Mo+8Si+2 Mn<=Ni+5ON+6.4 are satisfied.
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