What is 904L stainless steel? How to identify its special properties?

What is 904L stainless steel? How to identify its special properties?
 

904L stainless steel is a high-alloy, very corrosion-resistant stainless steel material. It is mainly composed of chromium, nickel, copper and a small amount of carbon, silicon, manganese and other elements. The following are several aspects that identify the special properties of 904L stainless steel:

1. Corrosion resistance: 904L stainless steel has excellent corrosion resistance, especially in environments containing highly corrosive media such as chloride ions, sulfuric acid, and hydrochloric acid. It resists etching, intergranular corrosion and stress corrosion cracking, making it ideal for use in harsh corrosive environments.

2. Anti-oxidation performance: 904L stainless steel has good anti-oxidation performance and can remain stable in high temperature and oxidizing environments.

3. Low magnetism: 904L stainless steel has low magnetism and can be used in some situations with high magnetic requirements, such as medical equipment and electronic instruments.

4. High strength and ductility: Although 904L stainless steel contains a higher proportion of alloy elements, it still has high strength and good ductility, and is suitable for processing into parts and components of various shapes.

5. Wear resistance: 904L stainless steel has good wear resistance and can remain stable in high friction and wear environments.

The method of identifying 904L stainless steel is mainly through material identification and chemical composition analysis. When purchasing in the market, you can ask the supplier whether it has provided relevant certification documents and quality assurance for 904L stainless steel. In addition, chemical composition analysis (such as using a spectrometer) can accurately measure the content of elements in the material to determine whether it is 904L stainless steel.