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Copper alloys 銅 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. 紫銅，耐大氣，海水腐蝕，導電性好。紫銅焊接用，如導電銅排 ECu Cu 207 ECuSi Silicon bronze, corrosion resistance and high strength. Welding of copper, silicon bronze and brass. 硅青銅，耐蝕、強度高。銅、硅青銅及黃銅焊接用 ECuSi Cu 227 ECuSnB Tin phosphor bronze, corrosion resistance and high strength. Welding of copper, silicon bronze and brass. 錫磷青銅，耐蝕、強度高。銅、硅青銅及黃銅焊接用 ECuSn-C Cu 237 ECuAl Aluminum bronze, wear and corrosion and high strength. Welding or surfacing of copper alloys. 鋁青銅，耐磨、耐蝕，強度高。銅合金焊接或堆焊用 ECuAl-A2