How to distinguish 304 and 201 stainless steel plate?

Stainless steel plate is mainly used for decoration. It has several materials such as 201 and 304, but because the plates made of these materials are very similar, many people do not know how to distinguish these two materials. In fact, it can be distinguished from its technical indicators, materials and prices. Let me introduce to you how to distinguish 304 and 201 stainless steel plates?

How to distinguish 304 and 201 stainless steel plate?

1. Technical indicators: Ordinary stainless steel is divided into two types: 201 and 304. The actual components are different. The quality of 304 is better, but the price is higher, and the quality of 201 is poor. The imported stainless steel is 304, and the domestic stainless steel is 201.

2. Material: Group 201 is changed to type 17Cr-4.n-Ni-6Mn-N, and type 301 is replaced by Ni steel. Good magnetic properties, after cold treatment, used in railway vehicles. Group 304 becomes 18Cr-9Ni, a widely used high temperature resistant stainless steel. Used in food production equipment, Xitong chemical equipment, nuclear power plants, etc.

3. Pricing: 201 has high manganese content, very bright and dark surface, easy to generate manganese, and high manganese content. 304 with higher chromium content has a matte surface and does not rust. Compared with the two, the two are combined into one. In addition, the anti-corrosion performance is also different, the anti-corrosion performance of 201 is very poor, so the price will be very cheap.

4. Nickel content: The difference between 201 and 304 is mainly the nickel content. And the price of 304 is relatively expensive at present, but 304 at least guarantees that it will not rust during use. (Stainless steel liquid for testing).

5. Composition: Stainless steel is not easy to rust due to the formation of chromium-rich oxides on the surface of the steel. The hardness of 201 high manganese stainless steel is higher than that of 304, and the carbon is low in nickel. Composition (mainly from the aspects of carbon, manganese, nickel, chromium, etc. to identify 201 and 304 stainless steel).