What are the differences between 304 stainless steel and 201 stainless steel?
1.The differences in components
The components of the two are different. 201 stainless steel contains 15% chromium and 5% nickel and is a substitute for 301 steel. 304 stainless steel contains 18% chromium and 9% nickel.
2. The differences in corrosion resistance
201 has a high manganese content, with a bright surface that is slightly dark. A high manganese content makes it prone to rust. 304 contains a relatively high amount of chromium, has a matte surface and does not rust. Stainless steel is not prone to rust and forms rich chromium oxides on the surface of the steel body, which can protect the steel body. 201 material is high-manganese stainless steel, and 304 has high hardness, high carbon and low nickel.
- The differences in application
201 has the advantages of acid and alkali resistance, high density and no bubbles during polishing, and is suitable for making decorative pipes, industrial pipes and other products. 304 stainless steel has good processing performance and high toughness, making it suitable for the industrial and furniture industries.
How to choose stainless steel materials:
- Distinguish the materials
Common stainless steels available on the market include 201, 304, 316, etc. Their surfaces are processed and colored. Among them, 316 has stronger corrosion resistance, while 304 is the most environmentally friendly and is often used to make tableware, posing no harm to people. Unscrupulous merchants with similar prices may use 201 instead of 316. One should learn to distinguish them.
- Coloring process
The coloring process on the surface of the product will affect the price. Water plating coloring is not delicate enough and has the same effect as spraying. However, it is cheap. Vacuum coloring is relatively safe and environmentally friendly, and there is no need to worry about the generation of toxic substances.
- The quality of the film application
After processing, a protective film will be applied to the surface of the product, making it look smoother and preventing scratches. However, if the quality is poor, it will be difficult to tear off after a long time and dirt will stick to the surface.
- Observation of metal surfaces
Its surface contains metal components and is widely used in life. When purchasing, carefully inspect the surface to see if there are any color differences, scratches, peeling or other issues.
