S 221 Cu60 Sn1 Si0.3 Zn Rem. Melting point is about 890℃. Gas welding and carbon arc welding of brass, also braze welding of copper, steel and cast iron. 熔點(diǎn)約890℃。黃銅氣焊及碳弧焊用,也可釬焊銅、鋼、鑄鐵
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