How do you adjust its HRC? need advise

I

ikuyadas

Joined
Mar 23, 2010
Messages
211
Greetings, Question about my first knife.

I filed a blank of ATS34 that I bought 15 years ago.

It is approximately 0.12inch thickness and 5inch blade length.

Strongly convexed because I have only a file and EMS sharpening block.

Paracord wrapping will be taken and need a request of heat treating.

Here I want to ask how many HRC is recommended to this.

I'm worrying about its difficulty of sharpening and reprofiling.

Basically unbreakable is needed and batoning must be able to done.

Advice please... and sorry for my bad English.


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Since this is a complex steel it requires a properly temperature and time controlled heat treatment .If you do not have the equipment then you must send it to someone who does have it.
A steel like that would be hardened to 58-60 HRc normally .
 
Kombanwa,
As mete said, send it to a heat treatment professional. The recommended HRc for such a knife will be (again, as mete said) 58-60. The Heat treater will make it that hardness with your instruction. When you get the blade back, you will have to sand it down to the finish desired. Use a block of hard wood and silicon carbide sandpaper ( wet-or-dry is the main brand in the USA). Wrap the paper around the block of wood and sand the blade until it is smooth and all scratches are gone. Lubricating the sand paper with soapy water is a good idea.
Tanoshimu
 
Thanks for kind words mete and Bladsmith.

I'll send mine to this company for heat treatment.
They takes vacuum heat treatment for 1000JPY without shipping cost.
http://www.hatta.co.jp/jigyoubu/knife.html

I have HRc58/L6 EDC and HRc62/O1 camp knife, both are pretty tough.
Now I watched my favorite knifemaker prefers HRc 62.5/D2, that's in my interest.
http://www.ohyasuya.co.jp/sasaki/sasaki1.htm


59 or 62? ...(3 hours passed)...


I'll go with HRC61, thanks for advice:)
http://www.bladeforums.com/forums/showpost.php?p=5504847&postcount=8
 
Today I received a HT'd blank. RC is 59.
The blank surface looked like gold-colored but it was easy to remove with sandpaper.
No trouble with batoning and light chopping, and feels not so hard for sharpening than expected.
Still not be able to paper slicing but I could push-cut 550 paracord with it easily.
I hope it will have well-balanced steel properties. Thanks again for kind advices.
 
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