The difference between stainless steel 201 and 304

1.  201 is darker in color, and 304 has a smooth and bright surface.

2.  201 corrosion resistance and acid and alkali resistance are far less good than 304, 201 is brittle, and 304 has good toughness.

3.  Use a knife to scratch, 201 has scratches, 304 does not, and it can also be judged by color reaction with water.

say yes professionally

1. Specifications: Commonly used stainless steel plates are divided into two types: 201 and 304. The actual composition is different. The quality of 304 is better, but the price is more expensive, and the price of 201 is worse. 304 is imported stainless steel plate, 201 is domestic stainless steel plate.

2. Different useful steels: 201 is composed of 17Cr-4.5Ni-6Mn-N, which is a Ni-saving steel and a substitute for 301 steel. Magnetic after cold working, used in railway vehicles.

3. The application is different: the composition of 304 is 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.

4. 201 has high manganese content, the surface is very bright with dark light, and the high manganese content is easy to rust. 304 contains more chromium, the surface is matte, and it does not rust. There is a comparison between the two. 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 less nickel, the price is lower than that of 304, so the corrosion resistance is not as good as 304.

5. The composition is different: (mainly distinguish 201 and 304 stainless steel from the aspects of 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)

AISI(304) ≤0.08 ≤1.00 ≤2.00 ≤0.045 ≤0.03 18-20 8-10

AISI(201) ≤0.15 ≤1.00 5.5-7.5 ≤0.05 ≤0.03 16-18 3.5-5.5