SPECIFICATION: High Purity Grade A 99.9% to 99.99% scrap copper wire with diameter of 0.30mm, 0.25mm,0.20mm. Clean (free from any insulation), uncoated, untinned, unalloyed copper wire, brittle, & free of burnt. Chemical Composition: Element: (%) Copper : 99.90% min Lead: 0.005% Max Bismuth: 0.03% Max Carbon: 0.03% Max Iron: 0.005% Max Zinc: 0.003% Cobalt: