What's the difference between with 304 stainless steel and 201 stainless steel?

In the eyes of many consumers, 304 stainless steel belt and 201 stainless steel belt is almost no difference, can hardly distinguish with the naked eye, here to introduce you to some of the ways to distinguish between 304 and 201. 1, specifications: commonly used stainless steel plate is divided into two kinds of models 201 and 304, the actual is different components, 304 quality is better, but the price is expensive, 201. 304 for the imported stainless steel plate, 201 for domestic stainless steel plate. Up to 17 cr - 2, 201 4. 5 ni - 6 mn - N, Ni is section steel, 301 steel instead of steel. After cold working with magnetic, used in railway vehicles. 3, up to 18 cr - 304 9 ni, is the most widely used stainless steel belt, heat resistant steel. Used in food production equipment, wast, general chemical equipment, nuclear power, etc. Manganese content in the 4, 201 is higher, the surface is very bright with dark light, with high manganese is easy to rust. 304 containing chromium is more, surface is matte, not rust. Both together are compared. The corrosion resistance of the most important thing is different, the corrosion resistance of 201 is very poor, so the price will be much cheaper. Because 201 nickel is low, so the price is lower than that of the 304, and corrosion resistant performance is better than 304. The difference between 5, 201 and 304 is the problem of nickel. And 304 prices are more expensive, but 304, at least you can guarantee in use process will not rust. （ Available in stainless steel with potions doing the experiment) Six, stainless steel belt because not easy to rust on the surface of the steel body form rich chromium oxide can protect the steel body, 201 materials belong to high manganese steel belt is 304 high hardness, high carbon low nickel. 7, the different components ( Mainly from the carbon, manganese, nickel, chromium aspects to distinguish between 201 and 304 stainless steel belt) 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. The 18 - 20 8 - 10 AISI( 201). ≤0. 15 ≤1. 5 00. 5 - 7. 5 ≤0. 05 ≤0. The 16 - March 18. 5 - 5. 5