... tin, manganese, nickel, iron, lead, silicon composed of copper alloys. Brass has the strong abrasion. Special brass and call special ... sheet, strip material, rods, tubes, casting parts, etc. Contain copper in 62% ~ 68%, plastic, strong manufacturing compression equipment, etc. ... or rhombohedrons smelting, melting of ancient use brass is not too clear. The boiling point of lower than copper zinc, brass ...