New High-Toughness Stainless Steel: Nitro-X7

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dirc said:
if they wanted a super tough steel, they'd be better served using 3v ; )

honestly, there is no way this x7 will come close to the toughness or 3v, or even aeb-l
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however it should still be interesting to actually see real tests and results
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3V is good stuff and while it has better corrosion resistance than D2, it's notably less stainless than AEB-L or Nitro-V. Meanwhile, 14C28N has excellent corrosion resistance and this new Nitro-X7 should be at least as stainless.

Are you sure that it won't come close to the toughness of Nitro-V or AEB-L? I'll let K KKnives_Swiss or Larrin Larrin talk about this.
 
trevitrace said:
I wonder if it'll be as awesome as that new "powder metallurgy" steel op was so excited about a while ago.
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Funny man here is talking about AR-RPM9. There again, I think I was first to report on AR-RPM9 here when it was announced. The main difference is that Nitro-X7 seems to be coming from a reputable company.

For those who don't know, AR-RPM9 was Artisan Cutlery's first exclusive steel. It was initially heralded as both China's first powder-metallurgy steel and the first PM budget steel. They initially held back on revealing the composition and once they did, they cut off with a mysterious "rare earth elements". Unfortunately, it was all smoke. It was just (ostensibly) a powder-metallurgy version of 9Cr18Mov. Worse, initial testing of the steel showed it to have worse edge performance than regular 9Cr18Mov with a better heat treatment on WE's Civivi and Sencut knives. Then to put nails in the coffin, we learned that it wasn't even powder metallurgy!

So that was on Artisan. I just shared the claims they made and to be fair, they've worked with known designers and had a reasonable reputation at the time. Between that fiasco and a variety of QC and customer service issues I ran into with Artisan, I no longer recommend them. I'm also reluctant to try their second new exclusive steel, which just dropped. While they appear to have correctly labeled it as "spray form" this time around, I don't know that it's worth caring.
 
Larrin said:
Those are bold claims and make no sense based on the composition. How does increasing chromium from 13 to 15% give you even higher toughness? There’s no way Buderus would claim that. They certainly haven’t provided us any comparative numbers showing it.
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I only saw the announcement from K KKnives_Swiss on Instagram, in which it was described as "Nitro-V on steroids". My link to that announcement was deleted by a moderator here but I did share a screenshot of the micrograph.
 
Chronovore said:
Funny man here is talking about AR-RPM9. There again, I think I was first to report on AR-RPM9 here when it was announced. The main difference is that Nitro-X7 seems to be coming from a reputable company.

For those who don't know, AR-RPM9 was Artisan Cutlery's first exclusive steel. It was initially heralded as both China's first powder-metallurgy steel and the first PM budget steel. They initially held back on revealing the composition and once they did, they cut off with a mysterious "rare earth elements". Unfortunately, it was all smoke. It was just (ostensibly) a powder-metallurgy version of 9Cr18Mov. Worse, initial testing of the steel showed it to have worse edge performance than regular 9Cr18Mov with a better heat treatment on WE's Civivi and Sencut knives. Then to put nails in the coffin, we learned that it wasn't even powder metallurgy!

So that was on Artisan. I just shared the claims they made and to be fair, they've worked with known designers and had a reasonable reputation at the time. Between that fiasco and a variety of QC and customer service issues I ran into with Artisan, I no longer recommend them. I'm also reluctant to try their second new exclusive steel, which just dropped. While they appear to have correctly labeled it as "spray form" this time around, I don't know that it's worth caring.
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this thread needs a proper chronovore wall o text...this one^ was close but not enough.....

I got mixed feelings on this new steel. like to see how it plays out over time......
 
Chronovore said:
I only saw the announcement from K KKnives_Swiss on Instagram, in which it was described as "Nitro-V on steroids". My link to that announcement was deleted by a moderator here but I did share a screenshot of the micrograph.
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Oh, the horror. As was patiently explained to you, it was because it didn't work properly for many members and required them to click on a link taking them off this site...which violates the rules.

Those moderators are meanies.
 
Larrin said:
Those are bold claims and make no sense based on the composition. How does increasing chromium from 13 to 15% give you even higher toughness? There’s no way Buderus would claim that. They certainly haven’t provided us any comparative numbers showing it.
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I had not realized that this was not a powder-metallurgy steel. Still, fine grain and should be interesting.

EngrSorenson said:
This is the difference between you and I.
You call this “information”.
I call this “guy sitting in living room whittling wood and paper, declaring steel to be amazing, and selling knives”.
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Objectively, information was provided there. For instance, I had not realized that this was not a powder-metallurgy steel until he said it in that video.

Overall, I still think this could be an interesting steel and I look forward to seeing more information about it down the road. While lack of enthusiasm on some fronts is what it is, I'm a little sad for some of the hate here. I see the same specter that rises from the grave to attack many new steels or innovation in general: "an answer to a question nobody was asking". In most of these cases, some people were asking. It might not be the thing you need, but it's something new that might be just the thing that somebody else was after. Is having a new option so bad?
 
Perfectly reasonable to anticipate the possibilities of a new steel. Likewise to wait for it to prove itself before getting excited. I'm in the latter camp. Never said anything was wrong with the former.
 
David Mary said:
Perfectly reasonable to anticipate the possibilities of a new steel. Likewise to wait for it to prove itself before getting excited. I'm in the latter camp. Never said anything was wrong with the former.
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Announcing a new steel is one thing. Pronouncing it to be "a new supersteel" is bogus, especially with the data presented. Not to mention that a PhD metallurgist who specializes in knife steel disagrees with the pronouncement.
 
“Super steel” is purely marketing/ advertisement/hype term which is not defined and meaningless.

CATRA edge retention provides a reference for dulling via pure slow abrasive wear, generalizing it as edge retention in every situation is misleading.

Not all kinds of knives, applications, use manners favor the same mix of property, can’t claim superiority with no specification.
 
Blues said:
Oh, the horror. As was patiently explained to you, it was because it didn't work properly for many members and required them to click on a link taking them off this site...which violates the rules.

Those moderators are meanies.
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Seedy Lot said:
Another newish razor blade steel that we have seen little of in the states is 10C28Mo2, an improved 14C28N by Alleima. They included a 1% molybdenum addition to increase corrosion resistance. Alleima contends it has the finest carbide structure of any steel they make approaching that of PM steels.
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There are few powder stainless steels have carbide as fine as 13C26 12C27 and such, the low carbide composition naturally promotes smaller carbides, and Alleima makes sure they are small consistently.
 
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