What are the factors that affect the hardness of 304L stainless steel cold-rolled plate

It is not that the 304L stainless steel cold-rolled plate is not good and does not reach the specified hardness. It is just that the different processes and carbon content cause this state.

The so-called 304L stainless steel cold-rolled plate refers to the finished plate rolled by applying huge pressure to the rollers at room temperature using the plasticity of 304L stainless steel itself. After the stainless steel plate is cold-rolled, due to the obvious "cold working stress", the 304L stainless steel cold-rolled plate forms a surface strengthening effect. When used directly, the steel plate can be felt to be very hard.

However, two factors affect the hardness of 304L stainless steel cold-rolled plate: annealing treatment and carbon content.

The first factor is that the annealing treatment of 304L stainless steel cold-rolled plate removes the cold working stress strengthened during cold rolling, and the originally hard plate becomes soft, but its hardness still meets the national stainless steel standard.

The second factor is that the carbon content of 304L stainless steel cold-rolled sheet is less than 0.03%. Carbon is responsible for improving the hardness of stainless steel, but carbon is an impurity for stainless steel. The higher the content and the harder the hardness, the greater the chance of rusting of 304L stainless steel cold-rolled sheet.

The above are the factors that affect the hardness of the 304L stainless steel cold-rolled sheet, but it does not mean that the harder the 304L stainless steel cold-rolled sheet, the better. Too hard is not conducive to processing and bending.