Copper alloys 铜 　 合 　 金 S 201 Sn1 Si0.3Mn0.3 Cu Rem. Good mechanical properties and crack resistance. Gas welding and argon arc welding of red copper. 机械性能好，抗裂性好。紫铜气焊及氩弧焊用 ERCu S 211 Si3 Mn1 Cu Rem. Good mechanical properties. Argon arc welding of copper alloys and MIG brazing of steel. 机械性能好，铜合金氩弧焊及钢的MIG钎焊用 ERCuSi-Al S 212 Sn5 Cu Rem. Wear resistance. Argon arc welding of copper alloys and surfacing of steel. 耐磨性好。铜合金氩弧焊及钢的堆焊用 ERCuSn-A S 213 Sn8 Cu Rem. Wear resistance. Argon arc welding of copper alloys and surfacing of steel. 耐磨性好。铜合金氩弧焊及钢的堆焊用 ERCuSn-C S 214 Al7.5 Cu Rem. Wear and corrosion resistance. Argon arc welding of copper alloys and surfacing of steel. 耐磨、耐蚀。铜合金氩弧焊及钢的堆焊用 ERCuAl-A1 S 215 Al9 Cu Rem. Wear and corrosion resistance. Argon arc welding of copper alloys and surfacing of steel. 耐磨、耐蚀。铜合金氩弧焊及钢的堆焊用 ERCuAl-A2 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. 熔点约890℃。黄铜气焊及碳弧焊用，也可钎焊铜、钢、铸铁