... molding. 2Stainless steel,,iron ally,hard metal. 3Tolerances:+/-0.5% of dimensions. Electric power tool made by process of metal ... injection molding. 2.Material:stainless steel, iron alloy, hard metal etc,3 ... steels, low expansion alloys (kovar and invar), tool steels, soft magnetic alloys, super alloys, to conductive materials (copper). MIM is well ...