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1. Ferritic stainless steel Ferritic stainless steel is […]
1. Ferritic stainless steel
Ferritic stainless steel is the most common type of stainless steel material. It is a kind of stainless steel whose main structure is ferritic in use. The chromium content of this kind of stainless steel is between 11% and 30%. In addition, it also contains a small amount of elements such as molybdenum, titanium and niobium.
In addition to good corrosion resistance, ferritic stainless steel is characterized by good oxidation resistance, excellent stress resistance, and it also has good thermal conductivity and a very small expansion coefficient. However, the plasticity of ferritic stainless steel is poor, therefore, this kind of stainless steel material is mainly used to make corrosion-resistant parts.
2. Austenitic stainless steel
Austenitic stainless steel is a stainless steel material with a stable austenitic structure inside. In addition to containing 18% chromium and about 8% nickel, it also contains a small amount of molybdenum, titanium, nitrogen and other elements.
This kind of stainless steel material is a product with good comprehensive performance and can withstand the corrosion of multiple media. Moreover, the toughness and ductility of austenitic stainless steel are better, and at the same time, its free cutting performance is also very good. At present, austenitic stainless steel materials are widely used in various industries.
3. Austenitic-ferritic duplex stainless steel
Austenitic-ferritic duplex stainless steel is a stainless steel product whose internal austenite and ferrite structure each account for half. It has the characteristics of austenitic stainless steel and ferritic stainless steel. Compared with ferritic stainless steel, it has better plasticity and higher toughness. Compared with austenitic stainless steel, it has better thermal conductivity and expansion The coefficient is smaller.
Fourth, martensitic stainless steel
Martensitic stainless steel is a hardenable stainless steel material. The biggest feature of this kind of stainless steel material is that the mechanical properties of this kind of stainless steel material can be changed by heat treatment. At present, this kind of stainless steel material is mainly used in the processing of steam turbine blades, surgical instruments and other products.
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