Re: general question X

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Jason Johnson by way of Terry Fritz <twftesla-at-qwest-dot-net>" <hvjjohnson13-at-hotmail-dot-com>

Tungsten is a metal. #74 on the periodic table, W. It is one of the
strongest substances on earth, with an elastic modulus of 35.5 x 10^10 n/m^2
(ratio of stress to strain, stress being force/area and strain the amount of
relative deformation produced in a body under stress). Tungsten also has an
extremely high melting point at 3410 C (6170 F) and boils at 5927 C (10700
F), this is one of the main reasons we use it in spark gaps. Tungsten has a
resistivity of 5.6 x 10^-6 ohms/cm, compared to copper's 1.724 x 10^-6
ohms/cm, and brass' 7.00 x 10^-6 ohms/cm. Tungsten is extremely hard, but
brittle. I don't think its possible for you to drill or tap tungsten, unless
you have a machine shop and are equipped with a large stock of carbide tools
and alot of experience, and maybe not even then (I'm not 100% sure on the
machining, I'd probably be lost in almost any machine shop, so don't listen
to me there).

Jason Johnson

----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Friday, June 15, 2001 9:56 AM
Subject: general question X


> Original poster: "Wade B AndB Anderson by way of Terry Fritz
<twftesla-at-qwest-dot-net>" <nabedaw-at-juno-dot-com>
>
> hi guys,
>
> What type of material is tungsten? Hard or soft? is it drillable to tap?
> or thread?
>
> anyway
>
> wade
>
>
>
>