What is the difference between weathering steel plate and ordinary steel plate

Compared with ordinary steel plate, the surface of weathering steel plate is relatively hard. The weathering steel plate has good performance in corrosion resistance and wear resistance. Its main component is wear-resistant steel and atmospheric corrosion steel plate. The effect of ordinary steel plate is general.

As the weathering steel plate needs to be treated with rust, the rust should be explained in stages. In the first stage, the steel plate is not rusted. It is impossible to distinguish the genuine weathering steel plate from the ordinary hot-rolled steel plate by naked eyes. It is necessary to refer to the quality assurance certificate of the steel mill, which requires the supplier to provide the original with the red seal of the steel mill as far as possible, so as to avoid the merchants filling it with inferior quality. It can also provide samples to professional third-party testing institutions. In the first stage of the second stage, the genuine weathering steel began to grow small rust spots. The rust spots of ordinary steel plates were relatively loose, and some of the steel plates with poor rust treatment even had rusty skin. The third stage is long rust of steel plate. The second stage is that the genuine weathering steel plate has less rust water, and the rust spots are small and thick; the ordinary steel plate has more rust water, and the rust spots are large and thin and sparse; the ordinary steel plate has serious rust columns and tear marks, and the bottom of the workpiece shows signs of blackening. The fourth stage is long rust of steel plate. In the third stage, the genuine weathering steel plate has a clear and dense rust core layer, and the rust spots are closely adhered to form a protective layer, and the rust can hardly be removed by hand. The ordinary steel plate has a large amount of rust removal, and even the whole rust skin peels off and rusts through. The genuine weathering steel plate is reddish brown, and the ordinary steel plate is dark black.