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Re: tungsten carbide magnetic?

Original poster: "Brian" <ka1bbg@xxxxxxxxxxxxx>

Hi, if you want something that is not magnetic use Tan-Tung tool bits, made
of tantalum and tungsten. tool bit dealers will know what you want, but it
is expensive compared to regular carbide.
rexalloy i think is another name for tan-tung. It can be used machining and
doesnt loose its hardness even when red hot.. melts at more than 4,000
degrees F. try a search on the net. cul brian f.
----- Original Message -----
From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Wednesday, April 06, 2005 2:19 PM
Subject: tungsten carbide magnetic?

> Original poster: "David Rieben" <drieben@xxxxxxxxxxxxxxx> > > Hi all, > > I have a question about the tungsten carbide drilling blanks that > I will be using for my ASRSG. I've noticed that they somewhat > have an attraction to a strong magnet. I know that pure tungsten > is not magnetic so I was wondering what additional materials > are generally added to the tungsten carbide alloy that makes > it somewhat magnetically attractive? I know that iron would > be a "bad" thing to have in your RSG electrodes. It seems > like I've heard that cobalt is a metal that's alloyed with tung- > sten to make tungsten carbide and cobalt is indeed a mag- > netically attractive metal (is paramagnetic the correct term for > tis?). I know that cobalt is also extremely hard, too but I'm > not sure how it stacks up for SG electrode use in alloy with > tungsten or the typical tungsten/cobalt ratios of the carbide. > I don't think there are many complaints from the tungsten > carbided users as to their suitablility for SG electrodes al- > though I do realize that pure tungsten is the first choice for > this. I just thought that I would run this question by some of > you more metallurgically inclined list members for your opinions ;^)) > > David Rieben > > > David > > >