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

摘要

The present invention relates to a high-strength free-cutting lead-free copper alloy having excellent machinability and corrosion resistance and, to a free-cutting lead-free copper alloy which does not contain lead and which comprises 58-70 wt% of copper (Cu), 0.5-2.0 wt% of tin (Sn), 0.1-2.0 wt% of silicon (Si), and the balance of zinc (Zn) and inevitable impurities.