... steel , stainless steel 304, 316L, 316 etc.free options for post-treatment: polishing, powder coating, painting, plating, anodizing, heattreat ... assemblies can be found in a wide variety of advanced applications for the aerospace, aviation, defense, energy, industrial, medical, ... , reflectors, fan parts, case bottoms 1. The material for spinning metal parts are as below: aluminum, stainless steel, ...