What are the differences between stainless steel 201 and 304？

Stainless steel (Stainless Steel) is the abbreviation of stainless and acid-resistant steel. Steels that are resistant to weak corrosive media such as air, steam, and water, or are stainless steel are called stainless steel. So what is the difference between stainless steel 201 and stainless steel 304?

1. Different composition:

Commonly used stainless steel plates are divided into two types, 201 and 304, which are actually different in composition. 201 stainless steel contains 15% chromium and 5% nickel. 201 stainless steel is an alternative to 301 steel. Standard 304 stainless steel contains 18% chromium and 9% nickel.

2. Different corrosion resistance:

201 is high in manganese, the surface is very bright with dark and bright, high manganese is easy to rust. 304 contains more chromium, the surface is matte and does not rust. Stainless steel is not easy to rust because the formation of chromium-rich oxide on the surface of the steel body can protect the steel body. Material 201 is a high-manganese stainless steel with a higher hardness than 304, high carbon and low nickel.

3. The main applications are different:

201 stainless steel has certain acid and alkali resistance, high density, no bubbles, no pinholes, etc. It is used to produce high-quality materials for various watch cases and watchband back covers. Mainly used to make decorative tubes, industrial tubes, and some shallow stretched products.

304 stainless steel is a universal stainless steel material, with stronger rust resistance than 200 series stainless steel materials, and can withstand high temperatures of 600 degrees. It has excellent stainless corrosion resistance and good intergranular corrosion resistance. It also has good corrosion resistance to alkaline solutions and most organic and inorganic acids. Moreover, it has good processing performance and high toughness, and is widely used in industry and furniture decoration industry and food and medical industry.