The amount of nickel contained in the pipe ultimately determines the rust resistance of the pipe
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 worse.
2. The composition of 201 is 17Cr-4.5Ni-6Mn-N, which is magnetic after cold working and is used in railway vehicles.
3. The composition of 304 is 18Cr-9Ni, which is the most widely used stainless steel and heat resistant steel. Stainless steel 304 is widely used in food production equipment, chemical equipment, nuclear energy, etc.
4. Stainless steel 201 is high in manganese, the surface is very bright with dark light, and the high manganese content is easy to rust. Stainless steel 304 contains more chromium, and the surface is matte and does not rust. The two can be compared together. The most important thing is that the corrosion resistance is different. The corrosion resistance of stainless steel 201 is very poor, so the price is much cheaper. And because stainless steel 201 contains low nickel, the price is lower than that of stainless steel 304, so the corrosion resistance is not as good as that of stainless steel 304.
5. The difference between 201 and 304 is nickel content. And the price of stainless steel 304 is more expensive now, but stainless steel 304 can at least guarantee that it will not rust during use.
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