Corrosion Resistant Steel Plate of Caoden Steel, Anshan Iron & Steel Co., LTD

Cowden steel, or atmospheric corrosion resistant steel, is a low-alloy steel series between ordinary steel and stainless steel. Weathering steel is made of ordinary carbon steel with a small amount of copper, nickel and other corrosion resistant elements.The weatherability is 2~8 times of ordinary carbon steel, coating is 1.5~10 times of ordinary carbon steel.At the same time, it has the characteristics of rust resistance, corrosion resistance, prolonging life, reducing thickness and consumption, saving labor and energy.Weathering steel is mainly used in railway, vehicles, Bridges, towers and other steel structures exposed to the atmosphere for a long time.Used for manufacturing containers, railway vehicles, oil derrick, harbor construction, oil production platform and chemical and petroleum equipment containing hydrogen sulfide corrosion medium containers and other structural components.

Its characteristics include: alloy composition and weight percentage content of weathering steel: C: 0.12 ~ 0.21, Si: 0.2 ~ 2.0, Mn: 0.7 ~ 2.0, S ≤0.036, P≤0.034, Cu: 0.10 ~ 0.40, Al<0.2, and the rest are Fe and trace impurities.By alloying Cu, Mn, Si and Al, and simply adjusting the content of some elements of ordinary low carbon steel (Q235 steel), the economic weathering steel with good atmospheric corrosion resistance and comprehensive mechanical properties can be produced without changing the production process of Q235 steel.

Compared with ordinary carbon steel, weathering steel has better corrosion resistance in atmosphere.Compared with stainless steel, weathering steel only trace alloy elements, such as phosphorus, copper, chromium, nickel, molybdenum, niobium, vanadium, titanium, alloy elements total only accounted for a few percent, and not like stainless steel, reach ten percent, so the price is relatively low.

When phosphorus, copper, chromium, nickel and other trace elements are added into weathering steel, the steel surface forms a dense and strong adhesion protective film, which hinders the diffusion and development of corrosion, and protects the substrate below the rust layer to slow down its corrosion rate.In rust is formed between the layer and the substrate of about 50 microns to 100 microns thick amorphous spinel and dense oxide layer and substrate metal stick fine, because of the existence of the oxide film layer prevents the oxygen in the atmosphere and water infiltration to the steel matrix, and slow down the corrosion to steel material depth development, greatly improve the atmospheric corrosion resisting capacity of steel materials.Weathering steel is a series of steel which can be used for thinning, exposing or simplifying painting, and which can prolong the life of corrosion resistance, save labor and reduce consumption, and upgrade and replace. It is also a series of steel which can be integrated into the new mechanism, new technology and new process of modern metallurgy to make its continuous development and innovation.

The alloy composition and weight percentage content of weathering steel are: C: 0.12 ~ 0.21, Si: 0.2 ~ 2.0, Mn: 0.7 ~ 2.0, S ≤0.036, P≤0.034, Cu: 0.10 ~ 0.40, Al<0.2, and the rest are Fe and trace impurities.By alloying Cu, Mn, Si and Al, and simply adjusting the content of some elements of ordinary low carbon steel (Q235 steel), the economic weathering steel with good atmospheric corrosion resistance and comprehensive mechanical properties can be produced without changing the production process of Q235 steel.

Weathering steel (that is, atmospheric corrosion resistant steel) can be developed and innovated sustainably after integrating new mechanism, new technology and new process of modern metallurgy.Weathering steel is made of ordinary carbon steel with a small amount of copper, nickel and other corrosion resistant elements. It has the characteristics of high quality steel, such as strength, ductility, molding, welding, cutting, abrasion, high temperature and fatigue.Weatherability is 2~8 times of ordinary carbon steel, coating is 1.5~10 times of ordinary carbon steel, can reduce thin use, bare use or simplify the use of coating.This kind of steel has the characteristics of rust resistance, which can prolong the life, reduce the thickness and reduce the consumption of components, and save labor and energy.And the current manufacturing of the steel elite talent, is currently the most scarce in our country, currently receiving more weathering steel talent has steel talent network.Weathering steel products are used for the manufacture of containers, railway vehicles, oil derrick, harbor buildings, oil production platforms and containers containing hydrogen sulfide corrosive medium in chemical and petroleum equipment.