Johanning's Modified A-8

Ouch, Cliff smelt blood. I'll take that on the Infi issue. K329 was not bought by Busse and sold as Infi. It was obviously bought for a different application and the source I had put two and two together wrong. I'm eating crow here so don't feel a need to pile on with the beatings.

Issue closed again. Move on.
 
One of the things I've long wished I could see is Jerry's steel stockpile(s)--to see just how much he has of all different types. Remember, this is the guy who put 80,000 pounds of D2 up for sale a few years ago. Unless I'm much mistaken, there should be some 3V and Vascowear too. I realize, of course, it'd all just look like steel, but just to see so MUCH high grade in one place... :)
 
So what's the mistery behind INFI ? If it doesn't matter if it's K329 or whatever, what's the big secret? Many have said that the key to obtaining INFI performance is the developed heat treat for that steel. If that's so than if any other makers would get their hands on Busse's steel but don't know jack about their heat treat, it wouldn't matter anyway.

If it's indeed true that INFI is not K329, why can't a Busse representative clearly state (publicly) why both steels are not one and the same and prove the guy wrong? That would make more sense.
 
cold&sharp said:
So what's the mistery behind INFI ? If it doesn't matter if it's K329 or whatever, what's the big secret? Many have said that the key to obtaining INFI performance is the developed heat treat for that steel. If that's so than if any other makers would get their hands on Busse's steel but don't know jack about their heat treat, it wouldn't matter anyway.

If it's indeed true that INFI is not K329, why can't a Busse representative clearly state (publicly) why both steels are not one and the same and prove the guy wrong? That would make more sense.
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What doesnt make sense is why someone would sign up just to make a trolling post. :rolleyes:
Satrang's alter-ego?
 
cold&sharp said:
So what's the mistery behind INFI ? If it doesn't matter if it's K329 or whatever, what's the big secret? Many have said that the key to obtaining INFI performance is the developed heat treat for that steel. If that's so than if any other makers would get their hands on Busse's steel but don't know jack about their heat treat, it wouldn't matter anyway.

If it's indeed true that INFI is not K329, why can't a Busse representative clearly state (publicly) why both steels are not one and the same and prove the guy wrong? That would make more sense.
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seems to me like both Cliff and Cobalt proved that INFI and K329 are not the same if you read the thread. I did read it and that is what I got out of it. Then Busse comes in and confirms and even Satrang now agrees with Busse. I think this case is closed why is it that you continue to stir the pot when it has been settled?

Cold&sharp, it is obvious you are a trol intending to stir trouble as is evidensed by your two postings since you joined for the sole purpose of posting on this thread. I think trolls need to be banned and you are a troll.
 
Does anyone know what knifemakers have had experience with this (Modified A-8) steel?
:jerkit:
 
Cobalt there is likely going to be little use of that steel by knifemakers because of obvious arguements like why use A8 when you can use 3V? And why not simply use steels like L6 which are much more available to knifemakers as it is a saw steel. Most makers also find A2 tough enough and thus had little reason to investigate the tougher steels in that family as they get softer and lose wear resistance.

cold&sharp said:
So what's the mistery behind INFI ?
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There isn't a secret, Busse himself ran a competition several years ago where he listed the exact composition of INFI from an analysis and offered a Steel Heart as a reward to anyone who could guess the element which didn't show up. Simonich won it with nitrogen. Even though this is known, it doesn't stop the same threads from happening on a fairly regular basis, some people like to spread rumors and lots of people love to listen to them, except when it is about them of course.

-Cliff
 
Cliff Stamp said:
Cobalt there is likely going to be little use of that steel by knifemakers because of obvious arguements like why use A8 when you can use 3V? And why not simply use steels like L6 which are much more available to knifemakers as it is a saw steel. Most makers also find A2 tough enough and thus had little reason to investigate the tougher steels in that family as they get softer and lose wear resistance.
-Cliff
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You forgot to mention S5 and S7. :eek:

Finding new steels is what it's all about. I don't see these knifemakers saying that about folding knife steels like zdp and s30v. Imagine if they did, then we'd still be using bucks 425 steel.

No, it takes someone to request that these steels be used for their custom knife. They need to find a maker willing to do the knife with the steel you want. I can't imagine that no one has not worked with A8 or modified A8. Or even throw in Bohlers K329 since it was brought up n this thread.
 
Cliff Stamp said:
That is just a modified Steel Heart, same thing.

-Cliff
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Now, THAT'S just funny Cliff! LOL

No flame or anything.

I'm going to tell my wife I'm a modified Long Dong Silver!. ROFLMAO

Same thing, just modified.

Thanks for the chuckle.

Rob
 
Cobalt said:
Finding new steels is what it's all about.
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Speaking of that, in post #18 of this thread, Matti S. posted a couple of links which eventually will lead the eagle eyed knife knut steel snob (of which I proudly count myself as one ;) ) to the following .pdf:

http://onet.tehonetti.fi/sten3/onet/data/attachments/K390DE_MICROCLEAN.pdf

Scroll down to page 5 and take a look at some of the charactestics of a Bohler steel called K390 Microclean. It appears to be manufactured using the same particle metallurgy techniques that Crucible is now famous for. The chart on this page draws comparisons between K390 and three other steels. One of them is identified only as "10V". If, in fact, this is CPM 10V, then K390 has the potential to make one hell of a knife blade. The chart suggests that K390 possesses a wear resistance nearly identical to that of 10V (which is legendary, BTW), but with possibly much greater toughness.

I know you can't read too much into these charts, but K390 might be worth a closer look.
 
Cobalt said:
Does anyone know what knifemakers have had experience with this (Modified A-8) steel?
:jerkit:
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Cobalt, you deserve a straight up answer, so no I don't know of any such knife maker..sorry.., but at least, imho, I am the only one so far to have answered your question directly. :D :D ;)

You sure Cliff's not hijacking this thread? :D

Thanks for an interesting and entertaining thread
 
Bronco said:
I know you can't read too much into these charts...
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Those are the wrong properties for a knife steel, especially of that type, but it does look interesting, instead of or at least strongly supplemental to compressive strength you would want torsional and both the yield and ultimate failure points. The HRC chosen is also too low unless that corrosponds to one of the toughness peaks. It would be interesting to see a complete tempering response and the average size and type of the carbides.

Cobalt said:
You forgot to mention S5 and S7.
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Yes, mainly as these are not in the class of a A8 series steel. Steels like L6 can still get very hard, and L6 with a differential temper could have a 65 HRC edge and a 45 HRC spine for a very versatile blade. The shock series steels are at the extreme end and give up a lot of hardness for extreme toughness and are pretty much purpose made to take impacts off of concrete and metals. It is nice to see people start exploring them for extreme focus knives though which need to take really heavy impacts on a regular basis.

-Cliff
 
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