MT12 Cruwear hardness test results

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JLS
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MT12 Cruwear hardness test results

Postby JLS » Wed Jan 25, 2012 10:01 pm

I posted this in the MT12 re-release thread, but I figured that inquiring minds wanted to know.

I no longer work where I have a hardness tester in the next lab, but I left on very good terms and I stopped in to test my Cruwear mule this evening. I checked calibration before testing and I like the results. Please keep in mind, these were 3 tests on a single Mule. But I like the direction they point.

In case my writing is illegible, the numbers are 62.1, 62.2 and 62.8 HRC.

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42 Spyderco fixed blades and counting...

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MCM
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Postby MCM » Wed Jan 25, 2012 10:18 pm

WOW! Harder than I would have thought.
:spyder: :eek: :spyder: :eek: :spyder: :eek: :spyder:
More S90v & CF please.......

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Sequimite
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Postby Sequimite » Wed Jan 25, 2012 10:19 pm

Thanks, I feel even better about the two I ordered.
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Postby cckw » Wed Jan 25, 2012 10:19 pm

Did anyone do a test on the bad ones? would be a fun fact

JLS
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Postby JLS » Wed Jan 25, 2012 11:26 pm

cckw wrote:Did anyone do a test on the bad ones? would be a fun fact
I don't have any numbers, but I agree that it would've been interesting. Normally I'm right on top of the Mules and order one the first day, but I slacked off just long enough last fall that they were being recalled two days before I tried to order.

I didn't slack off this time. Got my order in about 9:03 am on Friday.
42 Spyderco fixed blades and counting...

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PocketZen
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Postby PocketZen » Thu Jan 26, 2012 12:04 am

JLS wrote:I posted this in the MT12 re-release thread, but I figured that inquiring minds wanted to know.

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Yes thank you! I have been ignoring that thread in case one specific member feels the need take shots at Sal.

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The Mastiff
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Postby The Mastiff » Thu Jan 26, 2012 6:20 am

The numbers couldn't be better for a knife with this steel going for toughness AND wear resistance. Beautiful! It can take higher numbers but it loses some of the toughness it's known for while gaining very little actual wear resistance. Just right Sal. Thanks again!

Joe
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Postby VashHash » Thu Jan 26, 2012 7:01 am

I hope I can get some funds together before this one is gone. But with people reassuring the next treat it makes it hard for them to stay on the shelf

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JNewell
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Postby JNewell » Thu Jan 26, 2012 7:32 am

MCM wrote:WOW! Harder than I would have thought.
Yes, and very favorable results - this is a promising blade!

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Postby 2cha » Thu Jan 26, 2012 11:41 am

Thanks JLS for the effort and especially the sharing!!

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xceptnl
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Pitting

Postby xceptnl » Thu Jan 26, 2012 11:52 am

UPS just dropped off my MT12P mule today and I was so excited to open it. I noticed the same "spots" the were mentioned in a previous post (jackthedog). I wiped off the oil that was on the blade and the spost were still there. I don't know if this is a side effect of the second heat treat to make them the proper hardness or what. I am not saying I have a SERIOUS problem with it, however I would love Sal's take on this or even some other forum members. See pic.
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sal wrote: .... even today, we design a knife from the edge out!
*Landon*

JLS
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Postby JLS » Thu Jan 26, 2012 4:36 pm

The Mastiff wrote:The numbers couldn't be better for a knife with this steel going for toughness AND wear resistance. Beautiful! Joe
I was pretty confident they'd do a great job on the heat treat. I've been in meetings where we discover that a mistake was made in manufacturing and I can only imagine what it was like there. I think we can see that Spyderco did everything they could to make their customers happy with the product. They released them at the same price too. That's the company that I know and love. It makes it easier to spend money when you like who it's going to!
2cha wrote:Thanks JLS for the effort and especially the sharing!!
This forum is a great resource and I like to give back a little when I can. I normally just browse and don't say much.
xceptnl wrote:I noticed the same "spots" the were mentioned in a previous post (jackthedog). I wiped off the oil that was on the blade and the spost were still there. I don't know if this is a side effect of the second heat treat to make them the proper hardness or what.
I didn't notice it on the one I tested last night, but I really didn't look that hard either. I pulled it out, wiped off the oil with some acetone and tested it. The other still hasn't left it's box, but I'll check later tonight.
42 Spyderco fixed blades and counting...

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Rwb1500
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Postby Rwb1500 » Thu Jan 26, 2012 5:50 pm

I just gave mine a good hard look and it does not appear to speckled like the above.

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jtoler_9
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Postby jtoler_9 » Thu Jan 26, 2012 7:35 pm

Curious. Looks like that mule has chicken pocks. I looked over my 2 mules and didn't see spots.

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Postby guidosst » Thu Jan 26, 2012 7:35 pm

Both of mine arrived today, the one I opened appeared speckle free.

Sithus1966
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Postby Sithus1966 » Thu Jan 26, 2012 7:44 pm

Mine arrived today, no speckling at all. Looked under magnification and noticed you can see the original "Spyderco" "Cruwear" under the new Cruwear. Don't know what they did to the blades, maybe a stonewash? I say this because mine arrived with a small "stone" in one of the tang holes. :)
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DeathBySnooSnoo
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Postby DeathBySnooSnoo » Thu Jan 26, 2012 8:02 pm

Damnit...now I really want one. Funds are tight though. Argh...too many decisions!!
On the hunt for...

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dsmegst
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Postby dsmegst » Thu Jan 26, 2012 8:26 pm

Thank you for the HRC numbers! I got my pair today and they look great. No pitting.
Dan (dsmegst)

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agent clark
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Postby agent clark » Thu Jan 26, 2012 10:10 pm

Anyone have the elemental specs on Cruwear? Its not up on the website yet, or in the back of the catalog with all the others...

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HighDesertSpyder
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Postby HighDesertSpyder » Thu Jan 26, 2012 10:25 pm

Taken from Crucible...

Typical Chemistry
Carbon 1.10%
Manganese 0.35%
Silicon 1.10%
Chromium 7.50%
Vanadium 2.40%
Tungsten 1.15%
Molybdenum 1.60%

http://www.crucible.com/eselector/prodb ... weart.html
:spyder:54:spyder:


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