| 简介 |
FIELD : metallurgy.SUBSTANCE : steel contains the following elements, wt % : C 0.05-0.07, Cr 18.0-20.0, Ni 5.0-7.0, Mn 8.0-10.0, Mo 1.4-1.8, Si 0.25-0.35, N 0.25-0.28, Al 0.0015-0.0035, rare earth elements 0, 005-0, 008, the rest is Fe and impurities. Steel contains the following components as impurities, wt % : Cu 0.05, S 0.0025, P 0.010, Sn 0.005, Pb 0.005, Bi 0.005, As 0.005.EFFECT : required strength parameters at room temperature, resilience at cryogenic temperatures and weldability ensured.2 cl, 1 tbl |
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