Metal Injection Molding and Custom Metal Components - PolyAlloys Injected Metals metal injection molding, mim, MIM, PIM, pim, stainless steel, 17-4ph, 316L, copper, 4140, 4130, metal injection molding, metal injection moulding, precision components, metal molding, mim parts, aerospace components, computer components, superalloys, mim, injection moldings, PolyAlloys, PSM Industries, powder injection molding PolyAlloys is a Metal Injection Molding (MIM) manufacturer of custom metal components using stainless steel, super alloys and more for a variety of industries including automobile, aerospace, medical, consumer products and computers.