Subject: Wanted TUNGSTEN

From: mike wolfe <[email-masked]>
Date: Tue, 2 Jul 1996 15:16:35 -0400

Wanted: Wanted : Wanted : Wanted :
Solid TUNGSTEN Steel rod,  preferably short round rod pieces
1/2" or  5/8" or 3/4" dia. and a minimum  of 2 3/4 inches long,
preferably 4" to 5" long. 
As I am not knowledgeable about this material, I am looking for 
a armor piercing  grade, to be used as special punches.
 
Contact:
Mike Wolfe   (313) 971-9100 days
	        (313) 668-0404 eve and mach.
	        Or   E-MAIL

THANKS

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From: [email-masked]
Date: Tue, 2 Jul 1996 20:05:30 -0400

>a armor piercing  grade, to be used as special punches.

Mike Wolfe, 
I think that what you are describing is the "T" series High Speed Steels (if
you really mean tungsten "steel" and not pure" W".  "T15" (13% Tungsten, 5%
Cobalt, 5 Chrome and 5 Vanadium) is the most common and is available from
Carpenter Technology and Crucible Steel Company.  Both make it from the
powder process and it is fairly available from stock inventories at around
$20-$25/# plus cutting. It would however be about number 287 on my list of
what steel to use for a punch.  It's claim to fame is its super wear
resistance (Rc 65/67) and its ability to hold an edge at elevated
temperature.  It's used mostly for metal cutting broaches where both the
metal being cut and the broach are ridgidly held.  It's very difficult to
heat treat due to it's high and narrow austenitizing temperature range, and
almost always done in a series of molten salt furnaces.  So, what do you mean
by "armor piercing"? Depleted uranium works real good for armor piercing
(joke).  Are these hand held punches? In a punch press? Progressive die?
Mike Schermerhorn

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From: [email-masked]
Date: Tue, 2 Jul 1996 23:51:21 -0400

The "T" series of tool steels are becoming harder to find.  If you are
looking for a hot working punch material, you might try S1 or H13.  There are
also several exotics and proprietary materials, but they are mostly
astronomical in price.  There is also the problem of trying to heat treat
complex steels in a home shop.  Many types have narrow heat ranges and will
cause problems if mishandled.  Probably the best thing is to consult a tool
steel salesman for your needs.

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From: "Franklyn Garland" <[email-masked]>
Date: Wed, 3 Jul 1996 11:28:34 +0000

On  2 Jul 96 at 15:16, mike wolfe wrote <snip-snip>

> preferably 4" to 5" long. As I am not knowledgeable about this
> material, I am looking for a armor piercing  grade, to be used as
> special punches.

YOWSERS!!!!  Wouldn't it be easier to use M2 or M42 grade tools 
steels?  They are cheaper and shoud do the job.  I haven't looked 
lately, but I believe M42 is a tungsten and cobalt bearing alloy.  
REALLY HARD STUFF, I have picked it up as scrap at some open die 
forging places.

Good Luck with the hunt!

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Franklyn D. Garland                         
The Celtic Knot Forge                       
[email-masked]                                 
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