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topic 60547

Stainless Steel which doesn't get magnetic from cold working?

October 26, 2017

Q. Normally if deep drawn products are made of SS201 grade, they become magnetic.
But there is another type, nearly 201 or a type of 201, which constantly remain non magnetic after deep drawing and does not become magnetic after many machine punches -- what is that grade or specialty?

Adeel Ahmed
- Karachi. Pakistan

October 2017

A. Hi Adeel. My limited understanding is that all grades of non-magnetic stainless are subject to some degree of magnetization from cold working, but that type 316SS is less susceptible than others. Please see the comments by Ken Vlach & Steven Sherman in topic 44899 and Bill Reynolds in topic 21171. If it's possible to anneal the product, that should remove the magnetic property. Good luck.


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Ted Mooney, P.E. RET
Pine Beach, New Jersey
Striving to live "Aloha"

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