Clean Grade A (99.9% to 99.99%) scrap copper er ts of clean (free of any insulation), untinned,uncoated,unalloyed copper hair burnt cessive oils minimum.
Chemical Composition:opper: 99.90% MinLead: 0.005% MaxBismuth: 0.03% MaxTotal impurities: 0.03% MaxExcluding Ag & OxygenStandard confirming to: (11000(ETP) content 99.90%