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is high speed steel magnetic?

noahAgain

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Joined
Dec 30, 2025
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As the title said, I’m curious if the HSS is actually magnetic. if it is, does it have a strong snap like 400 series stainless, or is it a super weak pull like 300 series?
I’ve never worked with this alloy before and can't find a straight answer online. Any help would be awesome!
 
Are you asking because you’re trying to ID a mystery tool blank, or because you want to use a magnet for chip cleanup or workholding? The reason matters a bit for what “magnetic enough” means.
 
I suspect you have a number of HSS tools in your shop, same as I have. Drill bits, hand reamers, even end mills are all often made of some version of HSS; all the HSS tools I have are all nearly as magnetic as soft iron. Find a magnet and test a few of your tools.

If you want actual numbers, here's a link to the Wiki page on magnetic permeability which has a chart comparing various materials.

Steel Pro Group's web page also has some less technical info on various steel alloys:
Magnetic Properties Guide

Hope this helps.
 
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