ASTM A242M:Weathering Resistant High Strength Low Alloy Structural Steel Plate and Coil. ASTM A588M:High-Strength Low-Alloy Structural Steel, up to 50 ksi [345 MPa] Minimum Yield Point, with Atmospheric Corrosion Resistance. JIS G3125 SPA-H:Hot Rolled Steel for Superior Atmospheric Corrosion Resistance Steel Plates, Sheets, Strips.
Weather Resistant Steel Plate|Weathering Steel Plate, or Weathering steel plate is manufactured by adding little Cu, Ni and other anti- corrosion elements to common steel, which make this kind steel to be with better toughness, better forming property, better weldability, better cutting and better anti- fatigue ability etc. Weathering steel plates corrosion resistance is twice to 8 times than that of common carbon steel plate, corrosion resisting performance of coating is 1.5 to 10 times than that of common carbon steel plate.
Carbon element is unfavorable to atmospheric corrosion resistance of S235J2W steel plate. Reduce the carbon content of S235J2W steel plate to reduce the precipitation of carbides, which can prevent the formation of galvanic cells. Generally, the carbon content of S235J2W steel plate is controlled below 0.12%.. When adding copper content of 0.2% ~ 0.4% in S235J2W steel plate, it can improve the