S30V , pro's/con's & heat treat

ONeill said:
thanks guys , I'll take more input if there is any . I have the crucible specs and have read the catra specs . I see crucible is calling for a -112 degree sub-cool in between tempers . Dry ice will not quite make that temp . -110 is the best I've gotten , will that make a difference ?
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I posed the same question to Ed Severson (main engineer of S30V) and his opinion was that dry ice works fine if you give it 6 hrs. or more. It's a time & temperature thing. (He also recommended a press quench for best results.)

I would let your customer know that he will get the best results resharpening with a diamond stone. The high vanadium content makes for a very high abrasion resistance which doesn't work well with other sharpening systems.

Note: :)Take as many scratches out before H/T as possible as it gets very difficult afterwards.

Gary
 
Gary Mulkey said:
I posed the same question to Ed Severson (main engineer of S30V) and his opinion was that dry ice works fine if you give it 6 hrs. or more. It's a time & temperature thing. (He also recommended a press quench for best results.)

I would let your customer know that he will get the best results resharpening with a diamond stone. The high vanadium content makes for a very high abrasion resistance which doesn't work well with other sharpening systems.

Note: :)Take as many scratches out before H/T as possible as it gets very difficult afterwards.

Gary
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Yep, that's the only con I have found to S30V is grinding after heat treat, even with ceramic belts. I take my scandi grinds to a sharp edge before heat treat, they come back from BOS straight and undamaged.
 
Great stuff if the heat treat is right. Made a few with BOS heat treat at 60 Rc.

You need to get them close prior to heat treat. Afterwards, it just laughs at belts and sandpaper.

Robert
 
The S30V may have it's place but once the owner starts to play with the sharpening it's place is in a drawer and not in use. Frank
 
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