Ferritic stainless steel (400 series) contains 15% to 30% chromium and has a body-centered cubic crystal structure. This type of steel generally does not contain nickel, and sometimes also contains a small amount of Mo, Ti, Nb and other elements. This type of steel has the characteristics of large thermal conductivity, small expansion coefficient, good oxidation resistance, and excellent stress corrosion resistance. It is mostly used for making atmospheric resistance. , Water vapor, water and oxidizing acid corroded parts. The price of ferritic stainless steel is not only relatively low and stable, but also has many unique characteristics and advantages. It has been proved that in many application fields where only austenitic stainless steel (300 series) can be used, ferritic stainless steel is an extremely An excellent alternative material, ferritic stainless steel does not contain nickel. The main elements are chromium (>10%) and iron. Chromium is a particularly corrosion-resistant element for stainless steel, and its price is relatively stable.
