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Production show 1. brass hollow rod Chemical Requirements CuZn42Pb2 CuZn40Pb2 Copper 56.5 - 60.0% 57.0 - 59.0% Lead 0.60 to 2.0% 1.5 to 2.5% Iron 0.30% max 0.40% max Total Imp. Excl. Iron 0.20% max 0...