Sandvik steels

Larrin

Larrin

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Jan 17, 2004
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Sandvik now has a website up for their knife steels. It is quite in depth and provides much more information than I thought it would: http://www.smt.sandvik.com/hardeningguide

Also, 12C27 is now available from Admiral. This is especially good news because it is available in the 5/32" and 3/16" sizes, which 13C26 isn't, so there is a stainless steel available with high edge stability and toughness in thicker sizes. It's too bad it isn't available in 1/4".
 
Too bad Sandvik doesn't offer online ordering. Thanks for the site!
 
They supply through Admiral, which I believe has online ordering.
 
I tried 13C26 and was just not impressed with it after working up a few blades. I posted earlier on this and after sharpening them and giving them a whirl, I will stick with my CPM154CM. On my blades, it just didn't hold an edge like the 154 did. That's just my blades in case someone wants to flame me.
 
The Sandvik steels are based on just Cr and carbon. 154CM also has 4 % Mo which gives much more wear resistance.We are fortunate enough to have the choice of many steels just pick the ones that is best for the knife in question.
 
I agree with mete, CPM-154 has more wear resistance than 13C26, no question, but 13C26 has greater toughness and a finer carbide structure. Different steels for different uses. CPM-154 is also more wear resistant than all of the common forging alloys (52100, O1, 1095, etc.) but they are some of the most popular steels.

Edit: By the way, 19C27 is the Sandvik grade designed for higher wear resistance.
 
That is a great site. I just spent an hour there. Good stuff.

Now I'm confused again about a snap temper before cryo. Damn it...
 
For the nervous types you may "snap temper" at 300F before cryo.This reduces chances of cracking during cryo.This doesn't seem to be very common though. A temper at 350F or higher will stabilize the retained austenite reducing the amount of RA transformed to martensite.
 
Mete, what does "snap" refer to in terms of time? 30 minutes @ 300? 1 hr. @ 300?
Is this done just as soon as the HT'ed blade is at room temp?
 
When you quench bring it down to room temperature then temper 300F for 1 hour ,let it cool to room temperature then into cryo.
A couple of years ago on the forum we discussed this in detail and a few of you even did experiments .The snap temper relieves some of the quench stresses.Cryo gives you about 1-2 HRc points higher hardness. The reduction of retained austenite does drop the toughness a bit.Cryo must of course be followed by normal tempering.
 
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