1, the nickel content is different: the nickel content of 30 1 material is about 4%, and that of 304 material is about 8%. Due to the addition of nickel, 304 material has better corrosion resistance.

2. Different functions: 304 material is a kind of general stainless steel, which is widely used in manufacturing equipment and parts that need to highlight comprehensive functions. 30 1 material will appear obvious work hardening phenomenon when it is deformed, which is suitable for occasions requiring high strength.