... time CNC machining available Anodizing or Epoxy powder coating Aluminum Extrusion partOther available processes: sand casting, investment casting, ... CNC machiningAvailable materials: cast iron, carbon steel, stainless steel, aluminum, brass, and zinc alloyStandards: JIS, DIN, ASTM, and ... is self-protected by its own thin, transparent oxide film. Aluminum's natural protective properties and color can be ...