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ER630(H0Cr17Ni4Cu4Nb)不銹鋼焊絲; 化學(xué)成分; C;0.05,Mn;0.25-0.75,Si;.075,Cr;15.5-17.5,Ni4.0-5.0,Mo0.75,Cu3.0-4.0,Nb0.15-0.45,S0.03,p0.03, 用途;用于同等材質(zhì)的不銹鋼的焊接,