How to distinguish 304 and 201 stainless steel plates

304 stainless steel plate is one of the important materials in home decoration. Its anticorrosive, hard and bright characteristics are loved by the owners. However, there are still many friends who lack understanding of stainless steel. So, what is 304 stainless steel plate? What is the difference between 304 stainless steel plate and 201 stainless steel plate?


First, what is 304 stainless steel plate

Stainless steel is another name for stainless acid-resistant steel. It is a kind of stainless steel. 304 stainless steel plate is one of the most common stainless steel materials in stainless steel. Density: 7.93g / cm3; temperature resistance 800 °, easy processing, strong toughness, widely used in industry, home decoration, medical equipment industry


1.Physical properties

Tensile strength ≥520mpa; Conditional yield strength ≥205mpa; Sectional shrinkage ≥60%; Specific heat capacity 0.5kj * kg; Expansion coefficient 18.4; Resistivity 0.73; Longitudinal elastic modulus: 193; Thermal conductivity 21.5; Hardness ≤187hb, ≤ 90hrb, ≤200hv; elongation ≥40%.

2.Use of 304 stainless steel plate

First, 304 stainless steel plates are suitable for food processing, transportation and storage. It has good plasticity and can be used in plate heat exchangers, tableware, cabinets, and water heaters; then, auto parts, water heaters, building materials, and the food industry are also involved. It can be said that 304 stainless steel plate is the most widely used stainless steel plate.




Second, how to distinguish between 304 and 201 stainless steel plates

1, 304 stainless steel plate and 201 stainless steel plate from the distance, the surface is the same gloss, matte color. But we can identify it in other ways. If you observe it directly with the naked eye at close range, the color of 304 is saturated and shiny, and it feels very smooth to the touch; if it is 201, it will be slightly dark, the color saturation is low, and the hand will feel a bit rough. In the case of water immersion experiments, the watermark on the 304 surface is very easy to remove, and the 201 treatment is very troublesome.

2. Distinguish by grinding machine: when grinding 304 stainless steel plate, sparks are short and small; while for 201, the sparks are scattered and many. When using this method to distinguish between large households, it is necessary to keep the polishing intensity consistent.

3. Distinguish by stainless steel pickling cream: apply the cream on 304 and 201 and observe the color change; if the color is white or does not change, it is 304; on the contrary, it is 201 on black.


Third, what are the characteristics of 304 and 316?

304 mirror stainless steel: It has the characteristics of high temperature resistance, good processing performance, good toughness and strong corrosion resistance. Widely used in handicraft industry and furniture decoration industry and food medical industry. Mainly used in household products, auto parts, medical equipment, food industry, agriculture, ship parts, etc.

316 mirror stainless steel: has good oxidation resistance and good welding performance. Used in pulp and paper equipment exchangers, dyeing equipment, film processing pipelines, external materials for buildings in coastal areas, and also used in the field of battery valves.


304 stainless steel is a very reliable and durable steel. You can use it with confidence. I hope that the appeal explanation will help you understand the 304 stainless steel more comprehensively.

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Author: Chris Na

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