Ferritic Stainless Steel
Ferritic stainless steel: 12% to 30% chromium. Its corrosion resistance, toughness and weldability increase with the increase of chromium content, and its resistance to chloride stress corrosion is better than other types of stainless steel.
Among these, there are Crl7, Cr17Mo2Ti, Cr25, Cr25Mo3Ti, Cr28 and the like. Ferritic stainless steel has high corrosion resistance and oxidation resistance because of its high chromium content. However, the mechanical properties and process properties of ferritic stainless steel are poor, and it is mostly used for acid-resistant structures with little stress and used as anti-oxidation steel. This kind of steel can resist the corrosion of atmospheric, nitric acid and brine solution, and has the characteristics of high temperature oxidation resistance and small thermal expansion coefficient. Ferritic stainless steel is commonly used in nitric acid and food factory equipment, as well as parts that work at high temperatures, such as gas turbine parts.