Is the magnetic 304 stainless steel plate fake?

   Is the magnetic 304 stainless steel plate fake? There is a popular saying among the people. Use a magnet to test the 304 stainless steel plate. If it can be attracted by the magnet, it is magnetic, which means that the plate is fake or has quality problems. Otherwise, the 304 stainless steel plate is magnetic. is good. In fact, some 304 stainless steel plates will have weak magnetism. It is unscientific or extremely one-sided to test the authenticity of stainless steel plates based on this.

   Usually the stainless steel plates we use are basically austenitic, such as 304, 201, 316 and other stainless steel plates. Generally speaking, these are indeed non-magnetic or weakly magnetic. However, during the production of smelted plates, component segregation or improper heat treatment may cause martensite and ferrite, and martensite and ferrite are magnetic; another situation is that after the plate is processed, such as folding After the bending process, the part where the processing is performed may also have a little magnetism. Generally, we do not use this to verify the authenticity of the plate, but use stainless steel testing fluid to identify the 304 stainless steel plate.

   Therefore, when purchasing stainless steel plates, you should not believe in the "magnetic effect" one-sidedly. What is more important is to pay attention to the brand and quality.