... iron stainless steel plastic Data Sheet CNC machining MaterialSteel, Zinc, Aluminium, Brass, Copper, Bronze, ADC12, A380, ... 40cr, 38crsi, Magnesium alloy, etc.Surface treatmentNickel plating, zinc coating, chrome plating, and oxidation, Polishing, chrome plating, ... aluminium alloy2.Finishing: color anodized, Bright zinc plated, plating of Nickel,silver,copper, zinc .etc. and anodized ,powder coated ...