1, the most commonly used stainless steel plate is divided into two types of 201 and 304, the actual composition is different, 304 good quality, but expensive. 304 is imported stainless steel plate, 201 is domestic stainless steel plate.
2. The composition of 201 is 17Cr-4.5Ni-6Mn-N, which is an alternative steel to Ni steel and 301 steel. Magnetically processed after cold processing for rail vehicles. The 304 composition is 18Cr-9Ni and is the most widely used stainless steel and heat-resistant steel. For food production equipment, Xitong chemical equipment, nuclear energy and so on.
3, 201 is higher manganese, bright surface with dark, high manganese content is easy to rust. 304 contains more chromium, matte surface, does not rust. The most important is the different corrosion resistance, 201 corrosion resistance is poor, so the price will be much cheaper. And because 201 contains low nickel, so the price is lower than the 304, so the corrosion resistance is not as good as 304.
4, the difference between 201 and 304 is the problem of nickel. And the price of 304 is now more expensive, generally close to 50,000 tons, but at least 304 can guarantee that it will not rust during use.