Anticorrosion Mechanism of Q265GNH Weathering Steel

Q265GNH weathering steel,resistant to atmospheric corrosion steel,which is the low alloy steel series between ordinary steel and stainless steel ,with high-quality steel toughness,plastic extension,forming,welding and cutting,abrasion,high temperature,anti-fatigue characteristics;Sex for the carbon steel 2 to 8 times and the coating of carbon steel 1.5 to 10 times. At the same time,it has anti-rust,so that components corrosion-resistant life,thinning and reducing consumption,energy saving and other characteristics.Q265GNH weathering steel is mainly used for the make of container,railway vehicles,oil derrick,harbor construction,oil production platform and chemical oil equipment containing hydrogen sulfide corrosion medium containers and other structural parts.

Anticorrosion mechanism:alloying elements in Q265GNH weathering steel can form a dense rust layer containing Cu, Cr and P elements between the surface of the weathering steel and the Fe304 rust layer.The rust layer is dense and stable with a-.FeOOH as the main body Crystal just cited.Because of the existence of this layer of dense oxide film,reducing the conductivity of the rust layer,and prevent the atmosphere of oxygen and water to the steel matrix infiltration,slowing the corrosion of steel materials in depth development,greatly improving the atmospheric resistance of steel materials.