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Can stainless steel be absorbed by the magnet?
Most people have a misunderstanding that stainless steel is not absorbed by the magnet, only iron. There are also many people who use magnets to determine the difference between stainless steel and iron. The conclusion is that iron can be adsorbed by the magnetite; stainless steel can not be adsorbed. This is not the case. Here is a detailed explanation for everyone, I hope to help everyone and solve the confusion.
Stainless steel from the metallographic material can be divided into ferritic stainless steel; martensitic stainless steel; austenitic stainless steel; duplex stainless steel.
The 304 material is a metastable stainless steel. It belongs to a single austenitic state after annealing. It may be magnetic, but it is weakly magnetic and generally demagnetized to make it magnetic. This is also the stainless steel that everyone knows. However, after the cold working deformation (such as stamping, drawing, rolling, etc.), the austenitic stainless steel undergoes a phase change (generally induced into martensite) and is magnetic. The cold worked martensitic stainless steel can be absorbed by the magnet. Regardless of the kind of metallurgy, stainless steel is magnetic, and has little to do with its own iron content. The main difference is the later processing technology.
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