bladegrinder
Well-Known Member
I just recently switched from 440-C to 154 cm. after searching around for heat treat info I decided I'd try this, the blade was foil wraped,placed in room temp. oven and brought to 1400 deg. I let it soak for 10 min. and brought it up to 1950 deg. and soaked for 15 min.
it was then quenched with 1" thick aluminum plates,a few minuites later after cooled it was placed in another oven at 400 deg. for 2 hours, cooled then placed back in at 400 for another 2 hours. the next day I had it rockwell tested on a certified tester and it came out at 57-58.
that was a heart breaker,I was aiming for 59-60.
I'm hoping someone here with experiance heat treating 154 CM can tell me where I went wrong,
what I should do, and can this blade be saved ?
it was then quenched with 1" thick aluminum plates,a few minuites later after cooled it was placed in another oven at 400 deg. for 2 hours, cooled then placed back in at 400 for another 2 hours. the next day I had it rockwell tested on a certified tester and it came out at 57-58.
that was a heart breaker,I was aiming for 59-60.
I'm hoping someone here with experiance heat treating 154 CM can tell me where I went wrong,
what I should do, and can this blade be saved ?