Copper alloys 铜 合 金 Cu 107 ECu Red copper, atmosphere and sea water corrosion and excellent electric conductivity. Welding of red copper such as electrical copper row. 紫铜，耐大气，海水腐蚀，导电性好。紫铜焊接用，如导电铜排 ECu Cu 207 ECuSi Silicon bronze, corrosion resistance and high strength. Welding of copper, silicon bronze and brass. 硅青铜，耐蚀、强度高。铜、硅青铜及黄铜焊接用 ECuSi Cu 227 ECuSnB Tin phosphor bronze, corrosion resistance and high strength. Welding of copper, silicon bronze and brass. 锡磷青铜，耐蚀、强度高。铜、硅青铜及黄铜焊接用 ECuSn-C Cu 237 ECuAl Aluminum bronze, wear and corrosion and high strength. Welding or surfacing of copper alloys. 铝青铜，耐磨、耐蚀，强度高。铜合金焊接或堆焊用 ECuAl-A2