Medical robot parts Material: aluminium 7075. Surface treatment: anodised red. Anodising of aluminium is an electrolytic oxidation process in which the surface of aluminium and aluminium alloys is usually transformed into an oxide film which is protective, decorative and has a number of other functional properties. Features: high strength heat treatable alloy, good mechanical properties, good wear resistance, good corrosion resistance, good oxidation resistance, tight structure, strong corrosion resistance