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Difference between stainless steel 201 and 304

Specifications: used 201 stainless steel and 304 stainless steel plate is divided into two types, actually is the component different from 304 quality better, but expensive, 201 worse. 304 imported stainless steel plate 201 is made of stainless steel plate.

2, 201 stainless steel contain 17Cr-4.5Ni-6Mn-N , which is the sort of Ni steel , it is a good replacing steel , after cold-forming, there is magnetic , can use in railway or vehicle .

3, 304 composition of 18Cr-9Ni, is the most widely used stainless steel, heat-resistant steel. Used in food production equipment, chemical equipment through the past, nuclear energy.

4, 201 is a high manganese, very bright with a dark surface the light, high manganese rust. 304 more chromium, matte surface display, does not rust. Both together have a comparison. The most important difference is that corrosion resistance, poor corrosion resistance of 201, so the price will be much cheaper. And because the low nickel 201, the price is lower than the 304, so the corrosion resistance as good as the 304.

5, The main difference between 201 stainless steel and #304 is the Nickel inside . 6. Stainless steel is not easy to rust because its surface form rich-chromium oxide , which can protect the steel body. #201 belongs to high manganese steel, high carbon and low nickel.

6, stainless steel rust because of the steel surface to form chromium-rich oxide to protect the steel body, 201 stainless steel material is a high manganese carbon lower than the hardness of nickel 304.

7, the composition is different (mainly from carbon, manganese, nickel, chromium aspects to distinguish between 201 and 304 stainless steel)
Steel 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 ≤ 0.03 18-20 8-10
AISI (201) ≤ 0.15 ≤ 1.00 5.5-7.5 ≤ 0.05 ≤ 0.03 16-18 3.5-5.5

About the fatigue resistance , #201 is more hardness, less ductile than #304 .

So, for car pedal, threshold sill and so on , these place is easy to be wear, compare with #201 and #304 , the best choice is to choose #304, it is not only protect the part like car door sill , but also be elegant and durable, and finally it never rust.

bebon is a 201/304 stainless steel supplier in CHINA,if you want to buy 201/304 stainless steel or want to find a 204/304 stainless steel supplier in China, pls contact us!

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