黄铜易切削黄铜棒板JMC-12-YC3501C3601C3602C3603C3604C3605C3771主要化学成份合金成分CompositionJISCuPbZnFeSn不純物C350160.0-64.00.7-1.7REM≤0.2Fe＋Sn≤0.4-C360159.0-63.01.8-3.7REM≤0.3Fe＋Sn≤0.5-C360259.0-63.01.8-3.7REM≤0.5Fe＋Sn≤1.2-)