1. Composition difference: 304 stainless steel, mainly composed of 18% chromium (Cr) and 8% nickel (Ni). 20 1 stainless steel is mainly composed of 16%- 18% of chromium (Cr) and 3.5%-5.5% of nickel (Ni), with a low nickel content.

2. Performance difference: 304 stainless steel has better corrosion resistance, high temperature resistance and wear resistance because it contains more nickel. 20 1 stainless steel has higher hardness and easier cold working, and can be used to manufacture various surface treatment products.

3. Usage difference: 304 stainless steel is widely used in household and commercial kitchen equipment, chemical equipment, food processing equipment and other fields, such as stoves, tableware, sinks, auto parts and so on. 20 1 stainless steel is usually used for decorative materials, interior decoration, furniture, electrical appliances and automobile decoration.