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Post by fishhawk on Jan 30, 2017 10:03:20 GMT -5
Another easy way to tell what your bushing is made of is to use a magnet. Pure Tungsten is non-magnetic, Tungsten carbide is magnetic.
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Post by Deleted on Jan 30, 2017 10:09:03 GMT -5
Good to know!!! Thanks
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Post by Richard on Jan 30, 2017 20:43:25 GMT -5
Greg.............is there any pure Carbide bushings or are they all alloyed with tungsten? Would carbide be more durable or harder than tungsten? I tried a brief search and it seems to always lead back to the alloy tungsten/carbide?
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Post by fishhawk on Jan 30, 2017 22:41:16 GMT -5
Greg.............is there any pure Carbide bushings or are they all alloyed with tungsten? Would carbide be more durable or harder than tungsten? I tried a brief search and it seems to always lead back to the alloy tungsten/carbide? I don't know right now if there is a pure carbide, I don't think so. The main part of the carbide in a 90/10 bushing is Cobalt that is used as the binder for the Tungsten. The Cobalt "cement" seems to be what burns away releasing the Tungsten powder that does not burn much or any at our temps. |
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Post by fishhawk on Jan 31, 2017 15:21:18 GMT -5
Here's the way I interpret Tungsten and Carbide. The Tungsten used is Tungsten Carbon, more commonly referred to as Tungsten Carbide. The various grades use different grain sizes and varied amounts of Cobalt as a binder. Carbide used in tooling has 10% or less Cobalt. The bushings I make are either 99.9% Tungsten/Carbon/Carbide or 90% Tungsten/Carbon/Carbide and 10% Cobalt.
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Post by Richard on Jan 31, 2017 17:39:21 GMT -5
Thanks!
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