product: brake disc material: Stainless steel process: sand casting condition: fully machined test: dynamic ... brake disc1) materials: grey iron, ductile iron, stainless steel, carbon steel, aluminum, copper alloy.2) standard:JIS,DIN,ASTM,BS ... castings process, investment castings process, die casting process, permanent mold castings,forged parts.5) manufacturing equipment(foundy used)cupla,electric ...