JIS G3125 SPA-C steel plate is a kind of high weathering steel. The weather resistance of JIS SPA-C steel is better than that of weathering steel for welded structures, so it is called high weathering structural steel. This type of steel is widely used in railway vehicles, various weather-resistant building structures (especially for industrial atmospheric environments), and bridge auxiliary structural components.
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JIS G3125 SPA-C Steel Plates Specification
Thickness: 1.2-150mm
Width: 1220-4200mm
Length: 5000-18000mm
Notes: coil thickness ≤ 25mm
MOQ: 10 PC
Product type : Steel plate, sheet, coils, sections
Delivery time : Promptly ( Stock) or 10-40 days (Production)
Stock : Available
MTC: Available
Payment Term : T/T or L/C At sight .
SPA-C Weathering Steel Element
Cu is more resistant to atmospheric corrosion when used in combination with other elements such as P and Cr. When the Cu content is 0.25%, the steel has good weather resistance. When the content exceeds 0.30%, the corrosion resistance is improved slowly, and the effect of continuously increasing Cu is not large. At the same time, Cu-containing steel has the problem of hot processing sensitivity, and it is easy to produce mesh cracks. Therefore, in order to improve the atmospheric corrosion resistance and prevent cracks in the steel, the Cu content is designed to be 0.25 to 0.35%. 3.2.3 P is an effective element for improving atmospheric corrosion resistance in alloying elements. It is generally not used alone, and it is better to use it in combination with Cu, Cr, etc. When the P content is increased from 0.01% to 0.08%, the steel plate is resistant to the atmosphere. Corrosion performance is greatly improved, and after the P content exceeds 0.08%, the resistance to atmospheric corrosion is not significantly improved. At the same time, excessive addition will reduce the ductility of the steel.
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