[TheForge] h13 for chisels

[Dave Brown]

H13 takes a long time to anneal.  According to the data at 
principalmetals.com:  "Forge at 1975 F down to 1700 F. Do not forge below 
1650 F."  For annealing:  "Anneal at 1600 F followed by slow furnace 
cooling at a maximum of 40 F per hour."  For hardening (heat 
treating):  "Preheat to 1500 f and then heat to 1850 F. Hold at 1850 f for 
15 to 40 minutes and then air cool (air quench)."

For all the info on this go to:
http://www.principalmetals.com/properties/result.asp?Family=Tool+Steels&MetalName=H13

Dave Brown


At 14:15 03/25/02 -0500, you wrote:
>Anealling is its bad point.  The only way I managed to aneal it at all was to
>heat up in a pipe then put the hot pipe and chisel into vermiculite.  It was
>still hard but a NEW file would just cut it.  Around here I can buy round 
>stock
>fairly inexpensivly but square stock has to be cut from plate so is very
>expensive.
>
>John Newman
>
>Shannell wrote:
>
> > Sounds like Im going to like this stuff, good for power hammer dies too Id
> > guess, how hard is it to anneal, overnight in ashes enough?? What are the
> > bad points?
> >