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How magnetic is tungsten carbide/cobalt cemented carbide? 1

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CoryPad

CoryPad

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The object is the indenting ball for a hardness tester. Can the ball be picked up with an ordinary magnet? Thanks!
 
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The tungsten carbide isn't magnetic, but the 3 to 20%Cobalt in the mixture is ferromagnetic, like iron or nickel. So how it responds to a magnetic field depends mostly on the ratio of cobalt to WC.
 
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The test method for the magnetic permeabilty of cemented carbides is ASTM A342.
 
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