[TheForge] Fw: Hardenind H-13

[Peter Fels & Phoebe Palmer]

I think EA Chase effected the tempering step by burying 
the cutting edge in a fat piece of hot steel.

David E. Smucker wrote:
> Dave,  For this tool do the following.
> 
> Heat to a good yellow heat, around 1850 to 1900 F.
> 
> Let air cool (quench) in still air down to 140 F -- you can just touch / 
> hold it like very hot water.
> 
> Temper by heating to 1050 F.  Blood red in very low light.
> 
> Let cool and put to use.
> 
> The tempering step is important and most folks are surprised to see it this 
> high.  There is actually a secondary hardening effect that takes place with 
> the temper step.  Final hardness will be around Rockwell C of 50 to 51.
> 
> Not textbook treatment but not far off.
> 
> Dave Smucker
> Brasstown, NC
> 
> --------------------------------------------------
> From: "Dave Mudge" <dave at magichammer.net>
> Sent: Tuesday, May 25, 2010 1:25 PM
> To: "Blacksmithing List Sponsored by ABANA" <theforge at mailman.qth.net>
> Subject: [TheForge] Hardenind H-13
> 
>> Good afternoon,
>> I am looking for a SIMPLE & FAST way to harden H-13.
>> I made a special chisel type tool actually it's more of a
>> pushing tool for beveling one edge of a chisiled line.
>> The tool is about 5/8 inch round stock and 6 inches long.
>> It is for use on the treadle hammer.
>> thanks,
>> dave mudge
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