Ferritic stainless steel: chromium 12% to 30%. Its corrosion resistance, toughness and weldability with the increase in chromium content increased resistance to chloride stress corrosion resistance is better than other types of stainless steel. 

Belongs to this category are Crl7, Cr17Mo2Ti, Cr25, Cr25Mo3Ti, Cr28 and so on. Ferritic stainless steel because of high chromium content, corrosion resistance and oxidation resistance are better, but the mechanical properties and process performance is poor, and more for the resistance of acid structure and for the use of anti-oxidation steel. 

This kind of steel can resist the corrosion of atmospheric, nitric acid and brine solution, and has high temperature oxidation resistance, thermal expansion coefficient is small, for nitric acid and food factory equipment, can also be made in high temperature work parts, such as gas turbine parts The 

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