09CuPCrNi-A steel by adding phosphorus, copper, chromium, nickel and other trace elements, so that the formation of dense steel surface and strong adhesion of the protective film, hinder corrosion diffusion and development to protect the rust layer below the matrix to slow down its Corrosion rate. The amorphous spinel-type oxide layer formed between the rust layer and the substrate is dense and has good adhesion to the base metal, and the existence of the dense oxide film prevents the formation of oxygen and / Water infiltration into the steel matrix, slow down the development of corrosion depth to the steel material, greatly improving the resistance to atmospheric corrosion of steel materials
09CuPCrNi-A has a rust-resistant protective layer against atmospheric corrosion, can be used in the manufacture of vehicles, bridges, towers, containers and other low-alloy steel structure steel. Compared with ordinary carbon steel, weathering steel in the atmosphere with more excellent corrosion resistance. Compared with stainless steel, weathering steel only trace alloying elements, such as phosphorus, copper, chromium, nickel, molybdenum, niobium, vanadium, titanium, alloying elements accounted for only a few percent, unlike stainless steel, More than a dozen, so the price is relatively low.
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