What is the difference between 304 stainless steel sheet and 201 stainless steel sheet?

What is the difference between 304 stainless steel sheet and 201 stainless steel sheet? Here is a brief introduction:

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

The composition of 2.201 steel is 17cr-4.5ni-6mn-n, which is a substitute for 301 steel. Magnetic after cold working, used in railway vehicles.

3. Different uses: 304 is composed of 18cr-9ni and is widely used as stainless steel and heat-resistant steel. Used in food production equipment, chemical equipment, nuclear power, etc.

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

5. Different components: (mainly from carbon, manganese, nickel, chromium to distinguish 201 and 304 stainless steel) 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≤2≤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

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