FREE-CUTTING LEAD-FREE COPPER ALLOY TO WHICH LEAD AND BISMUTH ARE NOT ADDED

摘要

Disclosed is a high-strength free-cutting leadless copper alloy with excellent machinability and corrosion-resistance. The free-cutting leadless copper alloy contains 58 to 70 wt% of copper (Cu), 0.5 to 2.0 wt% of tin (Sn), 0.1 to 2.0 wt% of silicon (Si), a balance amount of zinc (Zn), and inevitable impurities but does not contain lead.