copper rod 8mm composition:1.Cu+Ag>=99.90 2.P 0.004~0.012 3.Te 0.4~ 0.7 4.other<0.01% copper rod 8mm,good quality copper rod, plate ,target,wire....................aluminium bronze,phosphor bronze,BeCu,composition Cu+Ag ≥99.90 P 0.004~0.012 Te 0.4~ 0.7other<0.01%