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C0.05 Mn 1-5 Si0.75 Ni Fe 4-8 Nb+Ta 1.5-5.5 S0.015 P0.04 Mo 3-7.5 Cr 13-17
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B2-20080178-1 WˎƷϢYC:()-ǽI-2012-0002 㹫W 33010802004809̖ B2-20080178-157 Copyright 2011 |W All Rights Reserved ݞIdƼɷ˾Ʊa839880) ᾀ0571-87774297 棺0571-87774298