ASTM A588 Weathering Steel Features

Compared with ordinary carbon steel, A588 weathering steel has better atmospheric corrosion resistance. This is due to the fact that the analytical elements reduce the resistivity of the rust layer, hindering the rapid growth of corrosion products.

The corrosion resistance of A588 weathering steel plate shows that its corrosion resistance performance is remarkable after long-term use.

The solubility of A588 weathering steel in iron is larger than that in the rust layer, and it can form a solid solution with iron, which can increase the potential of steel. According to the research results of relevant literature, the effects of analytical elements on the atmospheric corrosion resistance of A588 weathering steel are not the same.

A588 weathering steel is different from ordinary steel. It will rust on the surface like ordinary steel at the beginning. Due to the high degree of alloying, this process is faster than ordinary steel. However, due to the complex internal lattice of weathering steel, a dark black dense rust layer is formed under the loose rust layer on the surface. The rust layer is composed of α-FeOOH nanoparticles. In this uniform rust layer, nickel atoms replace part of the iron atoms, which makes the rust layer have cation selectivity and inhibits the penetration of corrosive anions.

Specially engineered alloying elements in A588 weathering steel plate provide a protective layer that results in corrosion inhibition. The protective layer on the surface of weathering steel will slowly grow and regenerate with the influence of the weather. In short, it is a protective layer formed on the surface of the steel knot by the scale.