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The difference of SUS201 and SUS304 Nov 24, 2017

Stainless steel 201 and 304 difference 1, specifications: commonly used stainless steel sheet is divided into 201 and 304 two models, the actual composition is different, 304 quality is better, but the price is expensive, 201 poor. 304 for imported stainless steel plate, 201 for domestic stainless steel plate. The composition of 2 and 201 is 17Cr-4.5Ni-6Mn-N, which is the Ni steel and the substitute steel of 301 steel. It is magnetic after cold working and used in railway vehicles. 3 and 304 are 18Cr-9Ni, which are the most widely used stainless steel and heat resistant steel. Used in food production equipment, chemical equipment, nuclear energy and so on. 4, 201 is manganese content is higher, the surface is bright, with dark bright, manganese content is higher, easy to rust. 304 chromium more surface is matte, not rust. Two together with the comparison. The most important thing is that the corrosion resistance is different, 201 of the corrosion resistance is very poor, so the price will be much cheaper. And because of the 201 nickel containing low, so the price is lower than 304, so the corrosion resistance is not as good as 304. The difference between 5, 201 and 304 is the problem of nickel. And 304 of the price is now relatively expensive, generally close to 50000 tons, but 304 of the words at least can guarantee the use of the process will not rust. (available medicine experiment), 6 stainless steel is not easy to rust because of the formation of chromium oxide on the steel surface can protect the steel body, 201 materials belonging to the high manganese stainless steel with 304 high hardness high carbon low nickel.7, different components (mainly from carbon, manganese, nickel, chromium and several aspects to distinguish between 201 and 304 the stainless steel carbon steel) (C) (Si) silicon manganese (Mn) and phosphorus (P) and sulfur (S) chromium (Cr) nickel (Ni) molybdenum rod (Mo) copper (Cu) AISI (304) = 0.08 = 1 = 2 = 0.045 = 0.03 18-20 8-10 AISI (201) = = 0.15 1 5.5-7.5 = 0.05, 16-18 = 0.03 3.5-5.5