Slip joint spring tempering

[diverdale]

Contemplating my first folder .. the book I have says that the spring needs to be around 45HRC ... what do you guys recommend for tempering to achieve this?

 

[John Wilson]

whichever steel you use will have a chart that tells you how long and what temperature to temper at to achieve the desired hardness you want.

For example, i temper AEBL blades at 350° to end up at about 61 Rc and springs at 1000° for two hours.

 

[Drew Riley]

For 10xx steels I typically temper around 670F, though lately I’ve just been torching my springs to a deep blue.

 

[Johan Nel]

For 10xx steels I typically temper around 670F, though lately I’ve just been torching my springs to a deep blue.

Is the torching in lieu of oven tempering or after oven tempering?

 

[Drew Riley]

Is the torching in lieu of oven tempering or after oven tempering?

I should have clarified. I always temper the blade and spring together in my tempering oven (usually around 400F or so) for at least 2 cycles, and then the back spring gets a final spring temper with the torch.

 

[mike miller]

I used 750 for high carbon and 1050-1100 for stainless.

 

[blancefitz]

45-49 Rockwell for your spring. Whatever steel you are using find the temper you need to get in that range and you will be good.

 

[Harley99]

45-49 Rockwell for your spring. Whatever steel you are using find the temper you need to get in that range and you will be good.

Yes I try for that range in rwl34.