Common types of corrosion-resistant alloy steel

1. Stainless steel : This is the most common type of corrosion-resistant alloy steel.

Austenitic stainless steel: has good corrosion resistance, plasticity and weldability. For example, 304 stainless steel and 316 stainless steel are widely used in food processing, chemical industry, medical treatment and other fields. They contain high chromium and nickel, and can form a dense chromium oxide protective film in the air to prevent further corrosion.

Ferritic stainless steel: It has a high chromium content and good resistance to chloride stress corrosion. It has a low thermal expansion coefficient and good oxidation resistance.

Martensitic stainless steel: It can obtain higher strength and hardness through heat treatment. However, its corrosion resistance is relatively weak, and it is mainly used in occasions such as knives and mechanical parts that require high strength and wear resistance.

2. Nickel-based alloy : nickel is the main element, with excellent corrosion resistance and high temperature strength.

Monel alloy: composed of nickel, copper and other elements, it has good corrosion resistance to hydrofluoric acid, seawater, etc. It is often used in marine engineering, chemical industry and other fields.

Inconel alloy: It has good oxidation resistance, corrosion resistance and high temperature strength, and can be used for a long time in harsh environments such as high temperature and high pressure. It is widely used in aerospace, petrochemical and other fields.

Hastelloy: There are many grades of Hastelloy alloy, which has strong corrosion resistance to various highly corrosive media such as sulfuric acid and hydrochloric acid. It plays an important role in the chemical and pharmaceutical industries.

3. Titanium alloy : It has high strength, low density and good corrosion resistance.

Pure titanium: Good corrosion resistance, especially in seawater and chloride environments. Widely used in aerospace, chemical, medical and other fields.

Titanium alloy: By adding other elements such as aluminum and vanadium, the strength and heat resistance are improved. It is widely used in aerospace engines, medical equipment and other fields.

4. Duplex stainless steel : It has the advantages of both austenitic and ferritic stainless steel.

Containing high levels of chromium, molybdenum and nitrogen, it has good corrosion resistance and strength. It is increasingly widely used in the fields of chemical industry, oil and gas.

Duplex stainless steels are stronger than austenitic stainless steels, and more corrosion resistant and tough than ferritic stainless steels.

There are several types of corrosion-resistant alloy steel. If you want to know more about the development prospects and characteristics of corrosion-resistant alloy steel, please pay attention to www.jstisco.com !