The difference between 02 steel and 304 stainless steel plate:

1. Different specifications

Commonly used stainless steel plates are divided into 201 and 304. There are two types of stainless steel plates. In fact, the composition is different. 304 is of better quality, but more expensive, and 201 is worse. 304 is imported stainless steel plate, and 201 is domestic stainless steel plate.

2. Different composition

201 is composed of 17Cr-4.5Ni-6Mn-N, which is a Ni-saving steel and an alternative to 301 steel. It is magnetic after cold working and is used for railway vehicles.

304 is composed of 18Cr-9Ni, which is the most widely used stainless steel and heat-resistant steel. It is used in food production equipment, chemical equipment, nuclear energy, etc. Molybdenum also promotes the precipitation of intermetallic phases in austenitic stainless steel, such as σ phase, κ phase, and Laves phase, which will have an adverse effect on the corrosion resistance and mechanical properties of steel, especially leading to a decrease in plasticity and toughness. In order to keep austenitic stainless steel in a single austenite structure, as the molybdenum content in the steel increases, the content of austenite-forming elements (nickel, nitrogen and manganese, etc.) must also be increased accordingly to maintain the balance between ferrite and austenite-forming elements in the steel.

3. Different elements

201 contains a higher manganese content, and the surface is very bright with a dark bright. It is easy to rust with a high manganese content.

304 contains more chromium, and the surface is matte and does not rust. The two are compared together. The most important thing is the different corrosion resistance. The corrosion resistance of 201 is very poor, so the price is much cheaper. And because 201 contains low nickel, the corrosion resistance is not as good as that of 304.

4. The difference between 201 and 304 is the nickel content

And the price of 304 is now It is relatively expensive, usually close to 50,000 per ton, but 304 can at least guarantee that it will not rust during use. (You can use potions to do experiments)

5. Stainless steel is not easy to rust because chromium-rich oxides are formed on the surface of the steel body to protect the steel body. 201 material is a high-manganese stainless steel with higher hardness than 304, high carbon and low nickel. Innate intergranular corrosion This material that does not contain titanium and niobium has a tendency to intergranular corrosion. Adding titanium and niobium, combined with stabilization treatment, can reduce intergranular corrosion. A high-alloy steel that can resist corrosion in air or chemical corrosive media. Stainless steel has a beautiful surface and good corrosion resistance. It does not need to undergo surface treatment such as plating, but gives full play to the inherent surface properties of stainless steel. It is a type of steel used in many aspects, usually called stainless steel.