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 ... ,metallographic microscope,spectrometer,PC thermometer,CE NSP-550CS heat analysis instrument,molding sand testing equipment, chemistry composition amalysis room ...