... smooth 5.Surface bright, no burr.. Name: Copper nickel wire,Greman silver,nickel wire,white copper wireNumber: BZn25-18,BZn22-18, BZn18-20,BZn18 ... ;Pb&Cacontents<100PPM;4.CuCrZr:C18150,C18200, C15000;5.White-Copper(copper-nickel):BZn10-25,BZn12-25,BZn15-20,BZn18-20,BZn22-18 ... . Manganese Brass:high intensity &hardness,good wear resistance;10. Silver-copper Alloy Copper nickel wire