It also called muntz metal. It is available in 63/37, 60/40 & 70/30. A ductile alloy is suitable for blanking, riveting, bending, hot forging & pressing. Lead free brass extrusion rod is use full for application like watch case, watch belts, heat exchanger shells, cold headed parts, brazing rod, pump cylinder liner, large nuts & bolts & door frames. Type : 70:30 Lead Free Brass 65:35 Lead Free Brass Rods.