Why do m3 stainless steel screws have magnetism after non-standard processing?

On the issue of m3 stainless steel screws not marked with magnetic, I believe that in everyone’s impression, stainless steel products are not magnetic. In fact, this is not right, for ferritic and martensitic stainless steel, basically are magnetic. The reason why austenite is sometimes called non-magnetic stainless steel is because their magnetic properties are very low.

If the processing specifications are relatively large austenitic stainless steel, sometimes we use magnets to suck, we will find that they are not magnetic. But if it is a very small product, we can use magnets to suck it up.

For some customers, stainless steel products have magnetic properties that will affect their use, in which case it can be demagnetized. However, the Shi Shi Tong stainless steel screw manufacturer reminds you that demagnetization is also risky, and it cannot guarantee that the magnetism will be clean. And some demagnetization process will cause the material to become soft, which also needs attention.

However, there is also a case that the non-standard magnetic properties of m3 stainless steel screws are as large as the material of iron screws. Then it is possible that the surface of the screw is stained with iron filings during the processing process, and it is not cleared, which will lead to the magnetic properties of the m3 stainless steel screws.

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