This tells us that if the stainless steel is weakly magnetic or not magnetic at all, it should be judged as 304 or 316 material; if it is the same as carbon steel, it shows strong magnetism, because it is judged as not 304 material. The greater the degree of cold working deformation, the greater the transformation of martensite and the greater the magnetic properties of the steel. It does not attract and has no magnetism. Because the bending deformation is larger, the magnetic induction is more obvious. Body tissue.

There are many types of stainless steel, which can be divided into several categories according to the organizational structure at room temperature: 1. In this way, 304 stainless steel will have weak magnetic properties.. In addition, after 304 stainless steel is cold worked, the structure will also be transformed into martensite. If the magnet is magnetic, it is considered to be a counterfeit. In fact, this is an extremely one-sided and impractical method of identifying errors.


That is to say, the magnetism of 304 steel always shows weak magnetism.5 tubes are produced. However, due to chemical composition fluctuations or different processing conditions caused by smelting, magnetism may also appear, but this cannot be considered as What is the reason for counterfeit or unqualified? As mentioned above, austenite is non-magnetic or weakly magnetic, while martensite or ferrite is magnetic. Martensite or ferrite type: such as 430, 420, 410, etc. We suggest 6202 ball bearing that when buying stainless steel products, you should choose products from reputable manufacturers

6, short-circuit 　　 If a component in the engineering machinery starting system or control circuit is damaged and cannot be repaired or replaced with spare parts, if the usage permits, consider short-circuiting it for emergency use. 2. The water pump will return to normal after replacing the new water seal. If there is a perforation, it can be treated with a wooden cork, and then tied up with iron wire or rope if necessary