... CNC machining available Anodizing or Epoxy powder coat Aluminum extrusion track 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 ... . And, because aluminum is also highly light reflective, it is used as a heat shield. Aluminum extrusion track part