What is the difference between austenitic stainless steel and ordinary stainless steel

1. Introduction to austenitic stainless steel

Austenitic stainless steel is a stainless steel with high corrosion resistance and high temperature strength. It is composed of metal elements such as chromium, nickel and molybdenum, among which the nickel content is generally between 8% and 10.5%. In addition, austenitic stainless steel also contains small amounts of carbon, iron, manganese and other elements.

Compared with other stainless steels, austenitic stainless steel has good high temperature performance and processing performance. It can withstand high pressure and force at high temperatures and has good plasticity and toughness. It can adapt to corrosive substances in various environments, including acids, alkalis and salts.

2. Introduction to ordinary stainless steel

Ordinary stainless steel is a kind of stainless steel composed of iron, chromium and other small amounts of metallic elements. It also differs slightly in terms of material composition, physical properties, and chemical properties. Compared with austenitic stainless steel, the nickel content of ordinary stainless steel is lower, generally between 0 and 8%.

The properties and uses of ordinary stainless steel are similar to austenitic stainless steel, but in comparison, its strength and toughness are slightly worse. In addition, its corrosion resistance will be weaker in special environments such as high temperature and strong acid.

3. Comparison between austenitic stainless steel and ordinary stainless steel

1. Material composition: The nickel content in austenitic stainless steel is generally between 8% and 10.5%, while the nickel content in ordinary stainless steel is lower, generally between 0% and 8%.

2. In terms of physical properties: Austenitic stainless steel has higher strength and toughness than ordinary stainless steel, and can maintain good mechanical properties at high temperatures.

3. Chemical properties: Austenitic stainless steel has better corrosion resistance and can adapt to more complex corrosive environments. The corrosion resistance and high temperature resistance of ordinary stainless steel are relatively low.

4. Conclusion

In general, austenitic stainless steel has better strength, toughness and corrosion resistance than ordinary stainless steel. However, due to its higher cost, ordinary stainless steel has a wider range of uses and is also a good corrosion-resistant stainless steel material. When choosing stainless steel materials, you should choose according to actual needs.