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缇庡湅(gu贸)閶佹キ(y猫)鍗�(xi茅)鏈�(hu矛)(AA) 7178锛孶NS A97178锛屼腑鍦�(gu贸)GB 7A03(LC3)锛涗縿缇呮柉袚OCT 1940(B94)锛涘湅(gu贸)闅汭SO 7178/Al-Zn7MgCu
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閶� Al(鏈€灏忓€�)锛氫綑閲�
閷� Mn锛氣墹0.30
閹� Mg锛�2.4~3.1
閴� Cr锛�0.18~0.28
閶� Zn锛�6.3~7.3
閳� Ti锛氣墹0.20
鏈寚瀹氱殑鍏朵粬鍏冪礌锛氭瘡绋細鈮�0.05锛涘悎瑷�(j矛)锛氣墹0.15
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