... from 5mm to 400mm Length: as the demand of customers Chemical Composition:Sn:7-9% Pb:0 ... This COPPER ALLOY BC2 has a good grinding of cutting performance and welding, heat processing to shape ... are easy. ApplicationAlloy used in the manufacture of the main frame, gears, bushings, bush, take ... guided valve, pump rod, cam, a fixed nut of high structural strength and wear-resistant parts Gunmetal JIS ...