牌号国际标准CuSn4,CuSn5,CuSn6,CuSn8....日本牌号C5111,C5101,C5191,C5210....美国牌号C51100,C51000,C51900,C52100....欧洲牌号CW450K,CW451K,CW452K,CW453K....●主要化学成份(主要な化学の成分)：合***号化学成分CuPbFeSnZnPCu+Sn+PC5111余量≤0.05≤0.103.5-4.5≤0.200.03-0.35≥99.5C5101余量≤0.05≤0.104.5-5.5≤0.200.03-0.35≥99.5C5191余量≤0.05≤0.105.5-7.0≤0.200.03-0.35≥99.5C5212余量≤0.05≤0.107.0-9.0≤0.200.03-0.35≥99.5C5210余量≤0.05≤0.107.0-9.0≤0.200.03-0.35≥99.5)