Re: [TCML] Copper Tungsten Alloy

[Brandon Garretson <garretsontech@xxxxxxxxx>]

It'll burn up a lot faster.
I use .250" 97% tungsten and it conducts just fine.
After a long run I only need to wipe the carbon off, with that much copper
you would need to grind the tips and re-adjust more often.



On Tue, May 1, 2012 at 3:47 PM, Matthew Edwards <matthew.n.edwards@xxxxxxxxx
> wrote:

> I was wondering if anyone has tried using copper tungsten alloy for spark
> gap. I have noticed some listed on ebay as grade 50-235 which appears to be
> 70% tungsten, 30% copper. It seems like it would be a good material to use
> but I wanted to get some "expert" opinions.
>
> According to wikipedia;
>
> CuW alloys are used where the combination of high heat resistance, high
> electrical and thermal conductivity, and low thermal expansion are needed.
> Some of the applications are in electric resistance welding, as electrical
> contacts, and as heat sinks. As contact material the alloy is resistant to
> erosion by electric arc. WCu alloys are also used in electrodes for
> electrical discharge machining and electrochemical machining.[2]
>
> There is a chart on this page displaying the properties of the alloy.
> Resistivity, etc..
> http://en.wikipedia.org/wiki/Copper-tungsten
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