1. Price: the commonly used Stainless Steel sheets are divided into different grades, including SS201 and SS304. They have different compositions. Usually, 304 stainless steel sheets are more expensive than 201 sheets. 201 stainless steel is often regarded as a substitute for 304.
2. Application: 201 is alternative steel to 301 steel. It is magnetic after cold processing and is used for railway vehicles. 304 is the most widely used stainless steel and heat-resistant steel. Used for food production equipment, general chemical equipment, nuclear energy, etc.
3. Composition: 201 sheet has high manganese content, bright surface with dark brightness, high manganese content, and easy to rust. 304 contains more chromium, the surface is matte and does not rust. Another main difference between 201 and 304 is the content of nickel.
4. Corrosion resistance: The most important thing is that the corrosion resistance is different. The corrosion resistance of the 201 metal sheets is very poor, so the price is much cheaper. Because 201 has low nickel content, the price is lower than that of 304, so the corrosion resistance is not as good as that of 304. The content of alloying elements, generally speaking, when the content of chromium is 10.5%, steel is not easy to rust. The higher the content of chromium and nickel, the better the corrosion resistance. For example, the nickel content of 304 material is 8-10%, and the chromium content reaches 18-20%. Such stainless steel will not rust under normal circumstances.
5. Mechanical properties: 201 stainless steel has high hardness, but its toughness is not as good as 304. 304 has better fatigue resistance.
6. Color: 201 has high manganese content, bright surface with dark brightness, high manganese content, and is easy to rust. 304 contains more chromium, the surface is matte and does not rust.
7. Others: Stainless steel is not easy to rust because chromium-rich oxide is formed on the surface of the steel body, which can protect the steel body. Sheet metal 201 is high manganese stainless steel, with higher hardness than 304, high carbon, and low nickel.
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