What are the main material types of stainless steel screen?
1. Ferritic stainless steel: chromium containing 12% ~ 30%. Its corrosion resistance, toughness and weldability increase with the increase of chromium content, and chloride resistance is better than other kinds of stainless steel. Belonging to this category are Crl7, Cr17Mo2Ti, Cr25, Cr25Mo3Ti, Cr28 and so on. Ferritic stainless steel has good corrosion resistance and antioxidant properties because of its high chromium content, but poor mechanical and technological properties. It is used in acid resistant structure and used as antioxidant steel. This kind of steel can resist the corrosion of atmosphere, nitric acid and saline solution, and has the characteristics of high temperature oxidation resistance and low coefficient of thermal expansion. It is used in nitric acid and food factory equipment, and can also make parts working at high temperature, such as gas turbine parts and so on.
2, stainless steel: chromium is more than 18%, also contains about 8% of nickel and a small amount of molybdenum, titanium, nitrogen and other elements. It has good comprehensive performance and can endure a variety of medium corrosion. The commonly used grades of austenitic stainless steel are 1Cr18Ni9 and 0Cr19Ni9. The wC<0.08% and steel number of 0Cr19Ni9 steel is marked as "0". This kind of steel contains a lot of Ni and Cr, which makes the steel austenite at room temperature. This kind of steel has good plasticity, toughness, weldability and corrosion resistance. It has good corrosion resistance in oxidizing and reductive medium. It is used to make acid resistant equipment, such as corrosion resistant container and equipment lining, pipeline, and nitric acid resistant equipment parts.