CNC Machining Part Material: brass, copper, bronze, alloy steel, stainless steel, carbon steel, aluminum etc CNC Machining Part1. Material: brass, copper, bronze, alloy steel, stainless steel ... . Standard/non-standard parts, OEM/ODM is available3. Machining parts, CNC machining parts, CNC milling parts, CNC lathe turning parts, grinding parts, stamping parts, casting ...