Principle Of Weathering Steel

After adding phosphorus, copper, chromium, nickel and other trace elements to the steel, a dense and highly adherent protective film is formed on the surface of the steel, which hinders the spread and development of rust and protects the substrate under the rust layer to slow down its corrosion rate. The amorphous spinel-type oxide layer with a thickness of about 50μm-100μm formed between the rust layer and the substrate is dense and has good adhesion to the substrate metal. Due to the existence of this dense oxide film, it prevents oxygen and oxygen in the atmosphere. The penetration of water into the steel matrix slows down the development of rust to the steel material in depth, and greatly improves the atmospheric corrosion resistance of the steel material. Weathering steel is a steel series that can be used in thinner, exposed, or simplified coating, so as to extend the life of products, save labor and reduce consumption, and upgrade. Continuous development and innovation of the steel series.