易切削黄铜合金牌号Articles化学成分Composition杂质总和GB/QBDIN/ASTM/JISCuPbZnFeSnTotalImpurityC3501JISC350160.0-64.00.7-1.7REM≤0.2Fe+Sn≤0.4－C3601JISC360159.0-63.01.8-3.7REM≤0.3Fe+Sn≤0.5－C3602JISC360259.0-63.01.8-3.7REM≤0.5Fe+Sn≤1.2－C3603JISC360357.0-61.01.8-3.7REM≤0.35Fe+Sn≤0.6－C3604JISC360457.0-61.01.8-3.7REM≤0.5Fe+Sn≤1.2－合金牌号Articles化学成分Composition杂质总和)