Standard Size Wallplates - Stainless Steel Decorator. Superior non-corrosive and non-magnetic properties for applications needing protection from those elements. 302/304 stainless steel alloy contains 18% chromium and 8% nickel for corrosion resistance. Stamped from 0.032” (0.81mm) thick material. Horizontally satin-brushed surface finish resists finger prints. Matching stainless steel mounting screws provided.