GB / T4171 Q265GNH weathering steel plate

Q265GNH steel plate belongs weathering steel under GB / T4171 standard,which has high-quality steel toughness,plastic extension,forming,welding,erosion,high temperature,anti-fatigue and other characteristics. Q265GNH steel has resistance to rust,so that components corrosion-resistant life extension,thinning and reducing consumption,energy saving and other characteristics,Q265GNH steel mainly used in railways,vehicles,bridges,towers and other long-term exposure in the atmosphere used in steel structure,manufacture of containers,railway vehicles,oil derrick,harbor construction.

Weathering principle

Adding phosphorus,copper,chromium,nickel and other trace elements into Steel,the steel surface form a dense protective film,hinder the spread of rust,protect the rust below the base to slow down its corrosion rate.Because of the existence of this layer of dense oxide film,it’s preventing the atmosphere of oxygen and water into the steel matrix infiltration,slowing the corrosion of steel materials in depth development,and improving the resistance of atmospheric corrosion of steel materials.