Explanation

stainless steel with ferrite (body-centered cubic structure) structure at slaughter temperature. The chromium content is generally 12% -30%, and generally does not contain nickel. Some steel grades contain small amounts of titanium, niobium, vanadium, or molybdenum. ferritic stainless steel is generally cheaper than austenilic stainless steel and has good resistance to stress corrosion. However, general ferritic stainless steel has disadvantages such as poor impact toughness, poor plasticity and corrosion resistance after weld, sensitivity to intergranular corrosion, and poor pitting corrosion resistance. The corrosion resistance of ferritic stainless steel can be improved by adding alloy elements. High purity ferritic stainless steel with low carbon, nitrogen and other impurity elements can be produced by adopting special refining technologies such as argon oxygen decarburization (AOD), vacuum oxygen decarburization (VOD) and so on. According to the chromium content, ferritic stainless steel can be divided into low ferrochromium ferritic stainless steel (chromium content 11% -14%), typical steel designation 06Crl3Al (405); Medium ferrochromium ferritic stainless steel (chromium content 14% -19%), typical steel designation 10Crl7 (430) and high ferrochromium ferritic stainless steel (berkelium content 19% -30%), typical steel designation 16Cr25N (446). ferritic stainless steel is widely used in tools, mechanical parts, chemical devices, petrochemical equipment, energy industry, food industry and daily necessities.

Classification