... copper powderultrafine copper powder ELECTROLYTIC COPPER POWDERAPPLICATIONWidely used in diamond tools, carbon brushes, friction materials, P/M products ... 325 mesh (%)80-90 ATOMIZED COPPER POWDERAPPLICATIONWidely used in diamond tools, carbon brushes, friction materials, P/M ... BRASS) APPLICATIONWidely used in P/M oil-retaining bearings, diamond tools, filters, P/M products, bushing materials, pastes ...