The matrix structure of A588 Grade A weathering steel plate has a great influence on the corrosion performance, and the multiphase structure should be avoided as much as possible. The more uniform and single the structure, the better the corrosion resistance of A588 Grade A weathering steel plate. The structure of A588 Grade A weathering steel plate is mainly ferrite + a small amount of pearlite structure, and the band structure has been basically eliminated, which helps to improve the corrosion resistance.
There are no defects such as cracks and folds on the surface of A588 Grade A weathering steel plate that affect the use. The shape is excellent, the ends are sawed neatly, and there are no defects such as burrs, burrs, and bevels.
Using low C, low Mn, Ni-free composition design and controlled rolling and controlled cooling process, the A588 Grade A weathering steel plate with a size of 8~30 mm has been successfully developed. The comprehensive mechanical properties and surface quality meet the standards and user requirements. The A588 Grade A weathering steel plate does not add precious alloying elements such as Ni, except for the addition of Cu, Cr and other elements that have the ability to resist atmospheric corrosion specified in the standard, and the cost is low.
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