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304 stainless steel plate how to improve the hardness?

304 stainless steel plate how to improve the hardness?

The following is introduced by China Wuxi JiaNuo special steel to you. 304 stainless steel plate hardness is difficult to improve, because the direct hot-rolled hardness is higher, after heat treatment to reduce the hardness! Therefore, the common method to improve the hardness of 304 stainless steel plate is to increase the hardness. Quenching, carburizing, nitriding and other processes can be used. Quenching and tempering can improve the overall performance, including hardness.

304 stainless steel sheet can only be hardened by work to improve its strength.

If you must use 304 material, you need to choose cold forged or cold drawn 304 stainless steel sheet as a blank. The general deformation is greater than 75%, and the hardness can reach hv480 (hrc48.1). The hardening effect corresponding to the cold working deformation will be different due to the different material composition. Martensitic stainless steels, such as 420, can be hardened by heat treatment, which is relatively easy to achieve.

304 is a general-purpose stainless steel that is widely used in the manufacture of equipment and parts with good overall performance (corrosion resistance and formability) requirements. In order to maintain the inherent corrosion resistance of stainless steel, the steel must contain more than 18% chromium and more than 8% nickel. 304 stainless steel is a brand of stainless steel produced according to ASTM standards.

In summary, the above is the main content of how to improve the hardness of 304 stainless steel plate. 304 stainless steel hardness is HB≤ 187hrb≤ 90hv≤ 200.

Factors related to the hardness of stainless steel.

1, rolling, folding and other processing will produce stress, affecting the hardness and solid solution treatment. 2, the most important is the material of the product itself.

3, at the same time, the products of different manufacturers will vary.

4、Granularity is related to microstructure.

5、The degree of mastery of annealing directly affects the hardness.