Subject: Re: HAMMER DIES AGAIN

From: [email-masked] (MR WILLIAM A HOCHELLA)
Date: Sat, 27 Jan 1996 09:04:46 EST

To All,
WARNING! D-2 is a die steel BUT it is a cold work die steel that is 
designed to punch or shear relative thin strip. Yes, it is extemely 
wear resistent but not very hard, all things considered. It is high 
chrome and high carbon. It is also very hard to machine, grind, etc. 
It is very fussy about heat treatment and it is EXPENSIVE! D-2 is not 
known for its impact resistance. The S-series may be overkill. The 
4340 / 4150 class of low alloy steels are a lot more forgiving, less 
expensive, easier to heat treat and are a lot tougher if tempered 
properly. "Tool" when added to steel does not make it better for all 
applications.

Reagrds,

Bill Hochella

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From: Tom Vincent <[email-masked]>
Date: Sun, 28 Jan 1996 20:48:18 -0600 (CST)

Re: D Series. If you'd like to experiment with it, e get ours free from 
the "local" Caterpillar repair shop. The pins that repair treads are D 
series, and the shop is happy to let us acquire a few now and again. For 
some uses, it is excellent, but yes, tough to work.