BromicAcid
International Hazard
Posts: 3245
Registered: 13-7-2003
Location: Wisconsin
Member Is Offline
Mood: Rock n' Roll
|
|
Trouble finding tungsten.
I'm currently on the lookout to buy 500 grams or so of tungsten metal but I'm having difficulty finding any real sources online outside of eBay (I
know it's in welding rods but I was looking for a more commerical source). Does anyone have a cheap (realatively so) source that carries tungsten
metal in any shape or form (wire, powder, lump, sheet, etc.)? With the stipulation that it must be of a known purity?
[Edited on 4/19/2006 by BromicAcid]
|
|
|
solo
International Hazard
Posts: 3975
Registered: 9-12-2002
Location: Estados Unidos de La Republica Mexicana
Member Is Offline
Mood: ....getting old and drowning in a sea of knowledge
|
|
Have you tried this place......solo
http://tungstenco.com/
It's better to die on your feet, than live on your knees....Emiliano Zapata.
|
|
|
BromicAcid
International Hazard
Posts: 3245
Registered: 13-7-2003
Location: Wisconsin
Member Is Offline
Mood: Rock n' Roll
|
|
Yes, I found that site but I have not asked for a quote yet on their tungsten though I likely will soon.
|
|
|
Fleaker
International Hazard
Posts: 1252
Registered: 19-6-2005
Member Is Offline
Mood: nucleophilic
|
|
I think I have about 500 grams of tungsten elements and a large spool of the pure wire somewhere in the basement. I originally got them from a
friend's father who works at General Electric. It's unlikely that I will find them anytime soon, but if I do, I'll send you a message.
|
|
|
Polverone
Now celebrating 21 years of madness
Posts: 3186
Registered: 19-5-2002
Location: The Sunny Pacific Northwest
Member Is Offline
Mood: Waiting for spring
|
|
500 grams is a considerable amount. If you can find a place that does TIG welding, maybe you can get electrode stubs for free or cheaply.
If you do a Froogle search for tungsten powder, it appears that it's used to weight golf clubs. You can get a half pound for $18. I don't know if that is cheap enough, but it's certainly cheaper than a "real" supplier like http://www.micronmetals.com.
If you go with golf club powder or TIG remnants, there isn't going to be a certificate of analysis of course, but I imagine that buying something of
certified purity is going to raise the price considerably.
PGP Key and corresponding e-mail address
|
|
|
Tacho
National Hazard
Posts: 582
Registered: 5-12-2003
Member Is Offline
Mood: No Mood
|
|
Why you don't want welding rods? They are easy to find, any decent hardware shop has them. It has to be quite pure, since tungsten temperature
resistance is hard to match.I bought one a few weeks ago, about 20cm long 4mm diameter. Looks synterized (sp?).
|
|
|
12AX7
Post Harlot
Posts: 4803
Registered: 8-3-2005
Location: oscillating
Member Is Offline
Mood: informative
|
|
Most TIG rods have some thorium, lanthanum, zirconium or other in them to improve emission. Maybe 2% tops, so 97% pure or so.
Tim
|
|
|
hodges
National Hazard
Posts: 525
Registered: 17-12-2003
Location: Midwest
Member Is Offline
|
|
Aren't light bulb filaments mostly tungsten? Of course, it would take a lot of them to get 500 grams.
|
|
|
BromicAcid
International Hazard
Posts: 3245
Registered: 13-7-2003
Location: Wisconsin
Member Is Offline
Mood: Rock n' Roll
|
|
I guess I may as well consider the use of tungsten welding rods to acheive my goal although it is not the optimal solution. On eBay they have rods
that are claimed to be Pure Tungsten for $12.45 including shipping for 5 rods (approx 7 in w/ 3/32 diamter) and according to some density
calculations, assuming they are tungsten, that works out to 305 grams of tungsten. But isn't there some sort of coating on these rods?
Polverone, I had no clue tungsten powder was used like that for golf clubs, interesting, also the container states that it should be kept from
ignition sources, I wonder what other kinds of fun could be had with it. I think I've got enough information to go off of for my reasons but that
doesn't mean I won't be accepting of new places or ideas, thanks everyone so far.
|
|
|
Misanthropy
Hazard to Self
Posts: 69
Registered: 24-3-2005
Member Is Offline
Mood: Variable
|
|
You can find tungsten slugs at gun shows around here occasionally. (I don't know why....) They are about .45 caliber and just a bit longer. Just
cylindrical stock. They run about .25 cents each from one of the random shit dealers.
Maybe your local gun show as well.
|
|
|
froot
Hazard to Others
Posts: 347
Registered: 23-10-2003
Location: South Africa
Member Is Offline
Mood: refluxed
|
|
As I understood it, Tungsten Carbide is used in ammunition, as opposed to the pure metal. You can get the carbide really easy from engineering shops.
Just ask for old cutting inserts.
We salute the improvement of the human genome by honoring those who remove themselves from it.
Of necessity, this honor is generally bestowed posthumously. - www.darwinawards.com |
|
|
12AX7
Post Harlot
Posts: 4803
Registered: 8-3-2005
Location: oscillating
Member Is Offline
Mood: informative
|
|
Cutters typically come with a bonus of 10-30% cobalt binder (properly, "cemented carbide", rarely ever pure carbide).
I suppose a mad scientist might grab a few pounds of stock, dissolve the Co with HNO3 and pour off the expensive cobalt solution  and wash the remaining carbides (which hopefully won't dissolve as well).
Tim
|
|
|
UniversalSolvent
Harmless
Posts: 17
Registered: 2-6-2006
Member Is Offline
Mood: No Mood
|
|
United Nuclear sells small tungsten rods. I'm not precisely sure what the overall mass is though.
|
|
|
ethan_c
Hazard to Others
Posts: 104
Registered: 5-6-2006
Member Is Offline
Mood: No Mood
|
|
This thread is rather old, but if you contact me (email? AIM? I just registered, getting used to the whole forum thing) I could ( I sincerely advise
against welding rods- been there, done that…) set you up with 500 grams of 99.2% 100 mesh W powder without too terribly much trouble…
And United Nuclear's rods, as generally good of a company as they are, are utter ripoffs. The difference between the rods they sell and a welding rod
is that their rods are far smaller (both diameter and length), griinded, and much more expensive per rod. In other words, a bad deal if you're looking
for quantity (rather than the ~0.5% quality increase you're paying for)
|
|
|
![[*]](images/xpblue/default_icon.gif){kind=icon}
