Magnetic stainless steel belt why will take

People often think of the magnet adsorption stainless steel strip, verify its quality and authenticity, not without magnetic absorption, think is good and true; Magnetic suction, is believed to be fake fake. Actually, this is a very one-sided, not real wrong about it. Austenite size: such as 304, 321, 316, 310, etc. ; Martensite or iron grain size: such as the 430, 420, 410, etc; Austenite size is non-magnetic or weak magnetic, martensite and ferrite are magnetic. Often used as decorative tube plate with majority is austenite size of 304 stainless steel material, generally is non-magnetic or weak magnetic, but caused by smelting chemical composition may also appear different magnetic fluctuations or processing status, but it cannot be considered a counterfeit or substandard, what reason is this? Mentioned above austenite is non-magnetic or weak magnetic, martensite and ferrite is magnetic, due to improper smelting composition segregation or heat treatment, will cause the austenitic 304 stainless steel with a small amount of martensite and ferrite in the organization. In this way, with 304 stainless steel will be in weak magnetic. In addition, 304 stainless steel after cold working, the organization structure will be to the martensitic transformation, the greater the degree of cold deformation, martensitic transformation, the magnetic steel. As a number of steel strip, the production of Φ 76 tube, no obvious magnetic induction, production Φ 9. 5 tubes. Because ling bending deformation is magnetically sensitive to some apparently, rectangular tube production due to the deformation is bigger than circular tube, especially the Angle, more intense magnetic more obvious deformation. To eliminate the causes of 304 magnetic steel treated by high temperature solid solution stability returns austenitic organization, thus eliminating magnetism. In particular, due to the above magnetic causes of 304 stainless steel belt, stainless steel band, and other materials, such as 430, carbon steel magnetic completely is not the same level, that is to say 304 magnetic always shows the weak magnetic steel. This tells us, if stainless steel belt with weak magnetic or completely without magnetic, should distinguish material for 304 or 316; If the magnetic with carbon steel, show strong magnetic, 304 for judging is not material. We suggest to buy stainless steel products with the product should choose reputable manufacturer, don't keen on gaining petty advantages, his tricks.