Hand Tools

Subject:
"through hardening"...
Response To:
for the non-metal folks.. ()

David Weaver
Another interesting term that I touched on....

The water hardening steels are considered surface hardening in a thicker cross section...none of these terms really meant much to me (not real smart, I guess) until pushing the limits on tool thickness with more true water hardening steels and noticing that they struggle to get hard through and through (if quenched in parks 50, they will have just a bit of ability to be filed by the best of files).

O1 steel is through hardening in pretty much any oil. 52100 will tolerate water hardening and something like parks is a better fit to get high hardness through and through, but it seems more forgiving to me than 1095 because of that little bit of through hardenability.

For ball bearings, looking at it through the lens of 1080 and W1 type steels (at least some of the Ws have tungsten), I can see how they thought it was a step up when making ball bearings and not struggling to get them through hard.

Tungsten is problematic for a garage user as the carbides like to form big and sparse. Lots of chromium is also, but a little bit of it seems to be a nice compromise without giving me what I don't want (the wear reistance and finishing resistance and sharpening resistance that vanadium gives - as you've said before, a little goes a long way, and crucible tried to make a forgeable very low vanadium steel at one point - CruForgeV - and it never really gained popularity that it probably could have because of the bit of vanadium.

When there's a need for that wear resistance, though, vanadium is a great choice to add it without coarsening the grain with small amounts (thus the superb toughness of 3v),

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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