8A Steel

R

Rob!

Joined
Feb 9, 2000
Messages
1,865
Does anybody have the heat treat - or at least the temper tables for 8A steel. I have a customer requesting I cryo a few 'kit' blades - and of course that requires a follow up temper. I could 'sneak up on it' starting at 300 or so and RHC testing it each try - but if it turns out to have an 800 degree temper I'll be at it for weeks. :eek:

Any guidance appreciated.

Thanks

Rob!
 
That's probably AUS-8A steel . What was the original HT ? Cryo after the fact probably won't help.
 
The original was in a Jantz Kit - and all we know is that cryo was not done. I understand that cryo is best done at the time of HT but I presumed that there would still be some transformation available later - of course with the understanding that another temper would be required. Thanks for the quick response Mete. First principle is "do no harm". Can you help me there?:D

Thanks
 
You only have to temper the new martensite formed from the retained austenite.Just temper at 400 F, that should be fine for that steel.
 
You must log in or register to reply here.
Back
Top