合金成分CompositionJISCuPbZnFeSn不純物C350160.0-64.00.7-1.7REM≤0.2Fe＋Sn≤0.4-C360357.0-61.01.8-3.7REM≤0.35Fe＋Sn≤0.6-C360457.0-61.01.8-3.7REM≤0.5Fe＋Sn≤1.2-C360556.0-60.03.5-4.5REM≤0.5Fe＋Sn≤1.2-)