heat treating o-1

M

md10mm

Joined
Feb 6, 1999
Messages
343
I need to see if i got this right??
1550degrees for 30min
imerese in salt water brine
grind black crap off
put in kiln @ 450 for 30-60 min
imerese edge
grind
back in at 450 for 30-60
then grind to finish??
is this right???
what color should it be when it comes out at 450 for 45 minutes???
mine was blue-black
yes it is non magnetic and file slides right off.
is thier other way to tell how hard besides using file???
thanks brad
 
Wow! thats alot of work. From what I've had experience with in terms of o-1 and 1095, is that these steels are great for people like myself that haven't aquired all the tools we need. After talking with a acomplished knife maker in my area I learned that you "can" heat your blade with a torch, with caution looking for certain clor paterns, and quench in of all things vegetable oil sucessfully. Then to draw the blade put it in your kitchen oven for 45min on about 425 deg. I made the mistake of getting in to big of a hurry last time and forgot to draw my blade. Now my wife has a pearing knife of about rockwell 62. Anyway my experience with 0-1 ias with stock removal. I hope I've helped in some way.
 
Sammy is wright on the money
109 and 01 is easy to treat
you are going through to much
brind it up to a non magnetic state
then harden it like sammy said
it is that easy,you are doing a double draw and it is not need.
You you get the same results
with they way sammy and I have explained
don't maker it any harder than it has to be just makeing and grinding is hard enough
give it a try.
 
Hello,

Those temperatures sound weird to me compleculated to0!! i do 01 as follows :

heat to cherry red

let cool to no color

heat to critical temp "using magnet to check"

Quench in oil edge down(mineral/olive mix oil)

put into pre heated oven at 400 Degrees for
1hr.

let cool to room temp.

turn on oven back to 375 Degrees for 1 hr

let cool.

turn back on at 350 Degrees for 1hr.

finish grind.

this gives me rockwells in the 59/60 range
and it seems to perform great.


allen
 
First thing I'd do is NOT do that 30 minute soak time. That's only beneficial for some air-hardening steels and stainlesses. On simple carbon steels like 01 and 1095, holding them above critical temperature for any length of time is causing grain growth, which dramatically weakens your blade.
For heat treating info from one of the acknowledged masters, check http://www.engnath.com/ . Before I experiment and come up with my own recipes, I try these first, and haven't gone wrong yet.

------------------
Oz

"I went to one of those so-called 'All you can eat' buffets last night, and I'm on to their little game.
They stop filling up the thousand island bucket after you empty it three or four times."
http://www.freespeech.org/oz/
 
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