The difference between 304 stainless steel and 201 stainless steel

- Mar 09, 2021-

 The difference between 304 stainless steel and 201 stainless steel

304 stainless steel

     

       304 stainless steel is a kind of universal stainless steel material. Its anti-rust performance is stronger than that of 200 series stainless steel, and it can withstand 600 degrees of high temperature. 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.


  201 stainless steel has certain acid and alkali resistance, high density, polished without bubbles, and pinholes. 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.


    The difference between 304 stainless steel and 201 stainless steel

  1 The commonly used stainless steel plates are divided into two types: 201 and 304. In fact, they are different in composition. 304 is of better quality, but the price is more expensive, while 201 is worse. 304 is imported stainless steel plate, and 201 is domestic stainless steel plate.


  2 composition.

  201 has a composition of 17Cr-4.5Ni-6Mn-N, which is a Ni-saving steel type and an alternative to 301 steel. After cold working, it has magnetism and is used in railway vehicles.

      304 is composed of 18Cr-9Ni, which is the most widely used stainless steel and heat-resistant steel. Used in food production equipment, Xitong chemical equipment, nuclear energy, etc.


  3 201 has high manganese content, and the surface is very bright with dark and bright, and high manganese content is easy to rust. 304 contains more chromium, the surface is matte and does not rust. The two are compared together. The most important thing is that the corrosion resistance is different. The corrosion resistance of 201 is very poor, so the price is much cheaper. And because 201 contains low nickel, the price is lower than that of 304, so the corrosion resistance is not as good as 304.


  4 The difference between 201 and 304 is the nickel content. And the price of 304 is now more expensive, generally close to 50,000 a ton, but 304 can at least guarantee that it will not rust during use. (You can experiment with potions)


  5 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.The 201 material belongs to the high manganese stainless steel, which has a higher hardness than 304, high carbon and low nickel.


       6 Different composition (mainly distinguishing 201 and 304 stainless steel from carbon, manganese, nickel, and chromium) steel grade carbon (C) silicon (Si) manganese (Mn) phosphorus (P) sulfur (S) chromium (Cr) Nickel (Ni) Molybdenum (Mo) Copper (Cu) .