Two, stainless steel materials are divided into what kinds

1, ferritic stainless steel

Ferritic stainless steel is one of the most common stainless steel materials, is a use of stainless steel with ferritic structure. The stainless steel contains between 11 and 30 percent chromium. In addition, it also contains a small amount of molybdenum, titanium, niobium and other elements. In addition to good corrosion resistance, ferritic stainless steel has good oxidation resistance, excellent stress resistance, good thermal conductivity and a very small coefficient of expansion. But the plasticity of ferritic stainless steel is poor, so this stainless steel material is mainly used to make corrosion resistant parts.

2, austenitic stainless steel

Austenitic stainless steel is a stable austenitic stainless steel, containing 18% chromium and 8% nickel, also contains a small amount of molybdenum, titanium, nitrogen and other elements. This stainless steel material is a product with good comprehensive properties and can resist corrosion of various media. And austenitic stainless steel has good toughness and plasticity, its free cutting performance is also very good. At present, austenitic stainless steel is widely used in various industries.

3, martensitic stainless steel

Martensitic stainless steel is a kind of hardened stainless steel material. The most important feature of this stainless steel material is that its mechanical properties can be changed by heat treatment. At present, this stainless steel material is mainly used for the processing of steam turbine blades, surgical instruments and other products.

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