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Ferritic stainless steels generally have better engineering properties than austenitic grades, but have reduced corrosion resistance, due to the lower Chromium and nickel content. Ferritic stainless steels are chromium containing alloys with Ferritic, body centered cubic (bcc) crystal structures. These steels contain iron and chromium. Chromium content is typically less than 30%.
Ferritic grades have been developed to provide a group of stainless steel to resist corrosion and oxidation, while being highly resistant to stress corrosion cracking. These steels are magnetic but cannot be hardened or strengthened by heat treatment. They can be cold worked and softened by annealing.
Ferritic stainless steel is used for decorative trim, sinks, and automotive applications, particularly exhaust systems. |