The stainless steel wire mesh is faintly magnetic. Stainless steel wire mesh is an austenitic material. Generally speaking, it is non-magnetic and weakly magnetic. However, magnetic properties may occur due to fluctuations in chemical composition or processing conditions due to smelting, but this cannot be considered as a counterfeit or a failure. What is going on?
The austenite we mentioned earlier is non-magnetic or weakly magnetic, while martensite or ferrite is magnetic. Because the composition is segregated or improperly heat treated during smelting. It will cause a small amount of martensite or ferrite structure in the austenitic 304 stainless steel wire mesh. Thus, the 304
stainless steel wire mesh will have a weak magnetic property.
The 304 stainless steel wire mesh is cold worked and the structure is also transformed into martensite. The degree of cold work deformation is greater. The more martensite transformation. The magnetism of steel is also greater.
It is like the same batch of steel strip, producing Φ76 tube, no obvious magnetic sense, producing Φ9.5 tube. Due to the large deformation of the bending, the magnetic induction is obvious. The rectangular tube produced is larger than the round tube, especially the angled part, and the deformation is more intense and the magnetic is more obvious.
If you want to completely eliminate the magnetic properties of 304 steel caused by the above reasons, you can restore the stable austenite structure by high temperature solution treatment, thus eliminating the magnetic properties.
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