Ranking of Steels in Categories based on Edge Retention cutting 5/8" rope

That is what I've always presumed was the reasoning.:) Every knife is potentially going to a 12 year old Boy and a thin ground, higher HRC blade wouldn't last a day in the woods.
 
skwurll said:
That is what I've always presumed was the reasoning.:) Every knife is potentially going to a 12 year old Boy and a thin ground, higher HRC blade wouldn't last a day in the woods.
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And if they watched any current trend of YT videos, maybe 5 mins or less. :eek:
 
I am glad that we do have great custom knife makers that will and do max out steels and geometry for supreme performance. I wish I could afford more.:)

I try to avoid YT - too much misinformation. Rather just see testing and results like this thread has
 
Ankerson said:
They do it because they are making knives for the masses and have no idea how the knives will be used so they set the hardness and geometry to suit.
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I could agree (I said could) but then why am I to spend the same money for two blades with same blade profile, geometry and thickness behind the edge, when one of these CLEARLY has a >4x edge holding and more blade material?
This is ONLY the first part. CRK do NOT do deep cryo, and this means A LOT OF a difference under many aspects.
 
daberti said:
I could agree (I said could) but then why am I to spend the same money for two blades with same blade profile, geometry and thickness behind the edge, when one of these CLEARLY has a >4x edge holding and more blade material?
This is ONLY the first part. CRK do NOT do deep cryo, and this means A LOT OF a difference under many aspects.
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I have more than a few knives that hold an edge for a very long time.. A very, VERY long time. :)

I don't know what CRK does or doesn't do process wise in their HT.

All I do know is that from my own experience is that I haven't seen anything weird personally with their S35VN or S30V.
 
daberti said:
CRK do NOT do deep cryo,
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Sonnydaze said:
IIRC, CRK sends all HT to Peters...can't get any better than that.
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Ok, I am going to play devils advocate here and ask where do you get your information from?

As far as I could find out the closest heat treating facility in Idaho is ACECO HEAT TREATMENT and if you scroll down here you can actually see the what appears to be the 5.5 inch Pacific. Granted, this is mere speculation, picking up the phone and calling them remains the best way to obtain a direct answer.

http://www.aceco.com/heattreat/index.html

Nitrogen gas is pretty standard for "Positive pressure high velocity gas quenching", Bohler does similar in their vacuum furnace hear in South Africa.
 
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marthinus said:
Ok, I am going to play devils advocate here and ask where do you get your information from?

As far as I could find out the closest heat treating facility in Idaho is ACECO HEAT TREATMENT and if you scroll down here you can actually see the what appears to be the 5.5 inch Pacific. Granted, this is mere speculation, picking up the phone and calling them remains the best way to obtain a direct answer.

http://www.aceco.com/heattreat/index.html

Nitrogen gas is pretty standard for "Positive pressure high velocity gas quenching", Bohler does similar in their vacuum furnace hear in South Africa.
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I'll answer for my own.
Valid for S30V, S35VN, Elmax, M390 and nearly all of SS high carbon high Cr and high alloy martensitic steels.
I've nothing against vacuum HT and gas overpressure quenching in production blades.
Neither I've nothing at all against CRK quality, craftmanship and alike. They also introduced the R.I.L :thumbup:
I'll keep the things very short: 58-59 with vacuum HT and no SH at common tempering temps and given the S35VN datasheet would have given 1 more HRC point without marring the conservative asset above mentioned, thus 59-60HRC, maybe 60.5HRC with a noticeable gain in edge holding.
 
daberti said:
I could agree (I said could) but then why am I to spend the same money for two blades with same blade profile, geometry and thickness behind the edge, when one of these CLEARLY has a >4x edge holding and more blade material?
This is ONLY the first part. CRK do NOT do deep cryo, and this means A LOT OF a difference under many aspects.
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Agreed. But then again, for me, edge holding is more important than almost any other aspect of a knife.
 
daberti said:
Sodak, we are in the same League, albeit I use to recommend not to push steels at their very top HRC.
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There is a line, a very fine line that the makers have to balance once they start pushing the hardness levels up towards the maximum level.
 
Jim, while we're on that topic, do you know whether the original, accidentally high (64-65 HRC) HT on the Spyderco Gayle Bradley folder was moved down to a lower range? Early on, Sal Glesser confirmed the 64-65 HRC range and said it was not what Spyderco had intended, but that they would see what happened with the knives. I don't think I've ever seen any follow-up on that.
 
Ankerson said:
There is a line, a very fine line that the makers have to balance once they start pushing the hardness levels up towards the maximum level.
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Agreed, but doing deep cryo is to be expected on 500 USD knives and would NOT bring about any issue at all ;)
 
JNewell said:
Jim, while we're on that topic, do you know whether the original, accidentally high (64-65 HRC) HT on the Spyderco Gayle Bradley folder was moved down to a lower range? Early on, Sal Glesser confirmed the 64-65 HRC range and said it was not what Spyderco had intended, but that they would see what happened with the knives. I don't think I've ever seen any follow-up on that.
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Not really sure. :confused:
 
ginaz said:
very similar to m390 from my understanding
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Nearly identical chemistry wise, yet being Latrobe part of Carpenter a better choice it is Micromelt CTS-204P. M390 it would be a long story to speak of, as Phil knows since our email Exchange ;)
 
According to CRK at the booth at Blade yesterday, Aceco does their heat treat. They have been running their blades 59-60 RC for about two years now (not sure of the exact date, maybe August 2013), they have just not updated their web site. If you look at the Inkosi it says 59-60, while all the others say 58-59. I noticed this and asked about it.
 
Don, this is QUITE an information!
Said that if this holds true Ankerson's test should perform in the 450 cuts range.
 
JNewell said:
Jim, while we're on that topic, do you know whether the original, accidentally high (64-65 HRC) HT on the Spyderco Gayle Bradley folder was moved down to a lower range? Early on, Sal Glesser confirmed the 64-65 HRC range and said it was not what Spyderco had intended, but that they would see what happened with the knives. I don't think I've ever seen any follow-up on that.
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I've heard this quite a few times; never been able to substantiate it though.... I still bought one first gen GB just to be sure. ;):D
 
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