s30v HT or farm it out

Gigemtxaggies

Gigemtxaggies

Joined
Nov 23, 2006
Messages
109
Do anyone heat treat s30v or does everyone farm it out? If there is anyone that heat treats s30v can you please explain your process? Thank you in advance.
 
If you have a knife oven it isn't that hard. This steel also benefits significantly from cryo so dry ice or liquid nitrogen is very desireable.

It is not a steel that can be heat treated by colour or guestimate or magnet testing.

Rob!
 
Sure

We start by cleaning them with acetone - double wrap tightly in high temp stainless foil with a bit of paper in the envelope to eat up O2 before it gets to the blades. We cook them 30 minutes at 1950 - plate quench between thick aluminum plates with the foil still on. When hand cool, remove from foil and freeze - we use liquid nitrogen - dry ice and acetone works fine - overnight. Next day, we double temper according to desired hardness - normally 400 degrees for RHC 60-61 - 2 hours each temper. Then we rockwell each blade - retemper if necessary to go a bit softer and we're done.

Pretty good results

Note, if there are obvious stress points, burrs etc, we'd do a flash temper at 350 for 1hr before cryo - but we prefer to go straight to cryo from quench.

Rob!
 
if i worked any s30v i could help you but no not yet
440c ats34 cpm154 3v 10v O1 but no s30v sorry
 
Thanks Rob! I could not find anything on this topic with the forum search engine. So, I really appreciate all your help.

Butch,
I have seen some of your knives and micarta... great work.
 
thanks
if you ever give a shot at any of the stuff i have use di ll try to help jsut remember thaqt all kilns read differently and if i replace my pyro i will have to reajust also
 
I use pretty much the same procedure as Rob only preheat at 1500 first and then ramp up to 2040 (furnance temp) and hold for 30 min. Cool to RT with forced air out or the foil or plate quench and then direct into the LN2. Keep the process moving for best results. After the finish grind I do one more temper at 25 degress less than the original tempers to relieve any strains from the grinding. Like Rob I check the hardness through the process and adjust the tempering temp. as necessay to end up with 60/61 rockwell. Phil
 
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