Hand Tools

Subject:
26c3 mule...

David Weaver
managed to make a 26c3 mule in little bits of time here and there and while waiting for a meeting to start, just tested it out.

26c3 is (my prior number was wrong) 1.3% carbon steel and a little bit of manganese.

I tempered 1/2 hour once only at 375 (which means temper effect more like 350F) and it's easily the hardest western chisel I've ever gotten my fingers on. Not much time coming up in the near future to experiment, but it's too hard to deflect and I would expect that it would readily let go of a corner in rough use.

Will gradually temper it back and see what hardness it is. It's got nothing wear resistant in it, but it's so hard that the india stone doesn't do much with it speed wise.

If it is tough enough (as in doesn't shed corners), It'll be more what I was looking for than 52100, which is a shame, because it's a lot more expensive and not very widely available.

It has the dryness of the files, but subjectively feels a little bit finer.

The scuttle on it is that it's about 2 points harder at a given temper temperature than something like O1, which is a pretty wide margin.

At 1.3% carbon and no tungsten or chromium or anything of that sort, it's right in the middle of white #1 range, which is a bit concerning for a non-laminated steel.

Alpha knife supply stated that they struck it at 68 hardness out of a parks oil quench. It's also very easy to heat and quench since there's nothing in it - it just needs to get to 1500F or so and be quenched in something very fast. 1095 and 52100 are about 2 points below that.

Hopefully it will retain its lack of toughness to some extent at lower hardnesses, just like white #1 does.

Messages In This Thread

52100 experimentation continues *PIC*
same chisels. *PIC*
Re: same chisels.
The reason for the choice...
Re: The reason for the choice...
Better than O1
relying on the charts...
caveat on my sharpening perceptions..
Re: caveat on my sharpening perceptions..
Re: caveat on my sharpening perceptions..
Thanks!
for the non-metal folks..
"through hardening"...
Re: same chisels.
Re: same chisels.
Re: 52100 experimentation continues
These get a trip to the freezer...
Re: These get a trip to the freezer...
if it's like the machine areas...
Maybe toughness *isn't* .....
Re: Maybe toughness *isn't* .....
A stake in the ground is needed
Re: A stake in the ground is needed
There's an absolute property..
optimizing hardness and toughness
Discussion and personal value
now I am confused more
Re: now I am confused more
Re: optimizing hardness and toughness
Thank you for the search results
Testing three chisels..
re-do with one of the (52100) chisels
question
Re: question
26c3 mule...
For those like me unfamiliar with 26c3
Re: For those like me unfamiliar with 26c3
Re: 26c3 mule...
Re: 26c3 mule...
Pictures
pics... *PIC*
(looking back at those four pictures...
When work pressure lets up some,
It'll look the same...
Re: pics...
Re: pics...
Deflecting vs. letting go
I think that's pretty much it...
Re: Deflecting vs. letting go
Re: Deflecting vs. letting go
I didn't check with a metallurgist..
26c3 pictures vs. ward later...
not that much later...the 26c3 *PIC*
Tempered to 380F? *NM*
Re: Tempered to 380F?
and the ward *PIC*
Request
Sure...
Temper temperature...
too much?
Re: Sure... *PIC*
Re: Sure...
David's knife
Re: David's knife
short follow up thought....
Re: short follow up thought....
Re: short follow up thought....
Re: Sure...
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