... too much lead is changed and tin mineralization of copper wire, welding wire, brass and bronze line, excessive oil, iron and steel scrap ... and nonmetallic, crisp burnt line, do edge sex copper wire and excessive ... , 005% PHOSPHORUS: <0, 01% SULPHUR: <0, 01% ZINC: 0, 003% Brass wire with diameter 0.1. 0.15, 0.20, 0.25 ...