NONLEAD FREE-CUTTING PHOSPHOR BRONZE WROUGHT PRODUCT, COPPER ALLOY PART, AND METHOD OF MANUFACTURING NONLEAD FREE-CUTTING PHOSPHOR BRONZE WROUGHT PRODUCT

摘要

PROBLEM TO BE SOLVED: To provide a nonlead free-cutting phosphor bronze wrought product free of Pb and capable of reducing an environmental load, and excellent in machinability and extensibility.SOLUTION: A copper alloy wrought product contains 0.5-11.0 mass% of Sn, 0.03-0.70 mass% of P, 0.02-1.0 mass% of S, and the remainder comprising Cu and inevitable impurities, a sulfide is distributed, the mean diameter of the sulfide is 0.1-10 μm, and the area ratio of the sulfide is 0.1-10%.