Heat treating Sandvik 12c27m

A

Andybrock

Joined
Feb 5, 2017
Messages
60
Hope Ive posted this in the right section.
I want to have a go at heatreating some Sandvik 12c27m SS, and from my research I seem to be getting a lot of different answers regarding the soak time it needs, some say 5 mins some 15 and others 30 mins.
The temperature people recommend seems pretty consistent at 1080c.
I'll be heat treating the blades in foil packets and in an electric HT oven. So what would be you're soak time with this set up?
Thanks
 
Beat me to the punch! If you're planning on doing a dry ice and acetone treatment, you can probably get another RC point out of it vs the -5 degrees but the recommended soak times are based on thickness. Good luck!
 
Thanks for the replies folks.
I did my first attempt at the recommended 5 mins soak, but when I took it out of the foil packet after quenching between aluminium plates and tried a 55rc hardeness testing file on it the file bit into the blade quite easily which made think 5 mins is nowhere near long enough.
Sandvik 5 minute quench times quoted must just be for oil quenching (I'm struggling to get any anti oxidising paint in the UK hence me using foil and plate quenching)
 
SS foil is the only way to HT this type of steel. Start the 5 minutes AFTER the oven gets back to temp. Should be plenty of time - and plate quenching is what most of us use and still get 61 RC or so from the oven. Soaking in dry ice/alcohol solution will bring that up a couple of points. Soaking freezer at -5F will pick up at least 1 point.

Good luck and have fun.
 
You must log in or register to reply here.
Back
Top