Hand Tools

Subject:
There's an absolute property..

David Weaver
..but I think it matters less what type of steel it is that we're talking about, except that may determine where this desirable property occurs.

The desirable property I'm talking about is where a steel doesn't fold, but doesn't chip easily. 52100 is teaching me a lesson about adding toughness at higher hardness, and that is that maybe what I thought I'd like to have, I don't really want.

The files have this quality of a very simple no-burr kind of steel in most cases. That is, that even when hardness is chased down, they don't develop much of a burr or fold over - they just fail in small chips. I'd guessed that this was something that was OK, but that something with better toughness would chip less. I'm not so sure now (I think it's true that "Something" will chip less, but I think it's also true that it might fold and little chips coming off might be better than little folds.

As far as toughness goes (in the charpy notch), 52100 and 3V are much the same. The thing that people like about 52100 is that it can either be set hard and have decent toughness, or it can be set a little softer and more or less be folded over onto itself (even hardened) without breaking. What it doesn't have is great wear resistance, but there's nothing that I've come across in woodworking that really needs much wear resistance until heat and speed are involved.

Thus far, these 52100 chisels are somewhere in the ballpark of ashley iles chisels (subjective) in terms of hardness, but they're a little more stout and I'm not afraid to beat on them. 52100 supposedly has a strong decarb tendency because there's not much to bind the carbon, but I don't know that such a thing is in play here.

I started with O1 and files - it'd be a real kick in the pants if those two end up being my two favorites and I do a big loop to get around to them (ending where I started).

I'll leave the next set of 52100 chisels a little hard and see how they hold up (I can leave them at a hardness where I know files and O1 are chippy).

We're far away from prescribing any standardized tests here, or probably even hardness testing, though it would be interesting to see how good my guesses are based on what a stone does.

Ashley iles chisels would've been an interesting thing to compare to, but I sold my set after starting to make chisels (the file chisel set that I kept recently is at least as good, but the chisels are more stout in the way the bevels are cut -I like them better).

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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