/diy/ - Do It Yourself

>>691673
I don't know where the hell you're getting your information
>Man at arms
>that shitty Viking sword documentary
Yeah no, pretty much every heat treating datasheet google turns up, including recommendation of ABS Master Smith Kevin Cashen disagrees http://www.cashenblades.com/steel/1095.html
Tempering at 1050F would put a blade ballpark (depending on alloy) at 35 RC. At that point you are way softer than a spring and only marginally harder than just a normalized bar, so what's the point of heat treating?
Most knives are in the RC low 60's to high 50's, and tempering at ~600 is appropriate for a sword, and already plenty tough, not brittle at all. You should not be tempering your knives to purple/dark blue unless maybe you're making a real beater sword. You're making a cutting tool, not a spring.
Anyways, you seem extremely misinformed at best, and I'd politely ask you do some more research from more valuable sources. Everyone in this thread has been flipping out because your temperature claims are all way too hot.