Thread: The correct Blade hardness 01 for razors

How to temper the steel 01 for razors?
Please share your experiences.
Interested in temperature and time to each stage.
The forum did not find the appropriate topic
Maybe I'm bad searched?

I usually temper O1 at 400F. I temper right after quenching. I temper twice an hour each time.

Charlie

Sits back and pulls up a chair,,, waits for the hardness numbers

Thank you!
1)Process 2)Temperature 3)Holding time 4)Environment

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1. 1)annealing 2) ...... 3)...... 4)....
2. 1)normalization 2)...... 3)...... 4).....
3. 1)quenching 2)...... 3)...... 4).....
4. 1)temper 2)400F 3)2 * 1 hour 4) air

I hope that the processes are properly written and understandable
Soon we will reach the truth of

This should help too

Thank you. it complies with the previous post.

Very interested in holding time during hardening

Do any of you pros test RC? is there a non destructive of doing so? today

No I don't test, for the simple reason of not having a hardness tester.
Hardness testing (Rockwell C) is non destructive.

I sparktest the blade and the edge in particular.
If I get a nice shower of sparks, I know the heat treatment was successful.
I choose the tempering temp to end up with an expected hardness. It may differ by a point, but when all is said and done: it doesn't matter that much whether the hardness is 61 or 62.

Originally Posted by Bruno

No I don't test, for the simple reason of not having a hardness tester.
Hardness testing (Rockwell C) is non destructive.

I sparktest the blade and the edge in particular.
If I get a nice shower of sparks, I know the heat treatment was successful.
I choose the tempering temp to end up with an expected hardness. It may differ by a point, but when all is said and done: it doesn't matter that much whether the hardness is 61 or 62.

We tested RC back 40+ yrs ago when in trade school on Rifle Bolts,was a stamping device with a punch,no Idea How it is done today.

I only test the HRC when I get a new batch of steel, doesn't matter if it's coming from the same company. They sell hardness testing files that range from Hrc 40 through 65. They come in a set of 6 and increment by 5 HRC. That can give you a basic direction. There's are also standing or portable handlheld models that are more precise but cost much more and need to be calibrated every so often.