Is it true that 304 stainless steel plate is magnetic?

Is 304 stainless steel plate fake because it is magnetic? This may be an enduring topic, but I feel that even now many people will use whether it is magnetic to identify the authenticity of 304 stainless steel plate. In fact, this is an unscientific and inaccurate method.

The main difference between stainless steel and stainless iron is the carbon content. The carbon content in iron is higher, while the carbon content in stainless steel will vary slightly depending on the material. The definition of stainless steel is mainly based on the content of chromium and nickel. As long as the content of both reaches the standard, it is a qualified stainless steel material. According to one of the classifications of stainless steel, austenitic stainless steel is non-magnetic or weakly magnetic, martensitic stainless steel is magnetic, and ferrite is also magnetic, so not all stainless steel is non-magnetic. Our common 201 stainless steel plate is also non-magnetic. It is a stainless steel plate with high manganese content. Compared with 304 stainless steel plate, the price is lower because it contains less nickel, so its corrosion resistance and oxidation resistance are not as good. 304 material is good.

Some friends also said before that there is another kind of non-magnetic treatment, which is a technology that can make magnetic materials such as martensitic stainless steel or martensitic stainless steel non-magnetic. Of course, the editor has not seen it in detail, so you need to make it yourself Identification is only provided as a reference here.