INFI YES?

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number41

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May 24, 2012
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Only found out now that its actually A8mod, this is bloody brilliant. Always wished people would use it more. Steels with high carbon content never made sense to me in big blades.
 
resinguy said:
The A8 Mod rumor was decisively disproved some years ago when the complete metallurgical analysis of INFI was published here.
Click to expand...
There are some who would still argue that… I don’t think it’s A8 mod at all, but some are still carrying that torch.

Also the formula changed at least once. IMO, the original recipe INFI with the nitrogen and cobalt was better than the newer stuff. Seems to hold an edge longer for me.
 
Larrin had a 2018 release Busse analyzed... you can find it in this thread.


Busse and/or CPK

Propietary steels? CPK are made with 3V and it's not a proprietary steel. Only the heat treatment is specific (Delta protocol). And Busse are made with A8 Mod steel (called INFI by Busse) and it's not a propietary steel either. CPM 3V. Soyons corrects, svp. :D
www.bladeforums.com www.bladeforums.com
 
AntDog said:
There are some who would still argue that… I don’t think it’s A8 mod at all, but some are still carrying that torch.

Also the formula changed at least once. IMO, the original recipe INFI with the nitrogen and cobalt was better than the newer stuff. Seems to hold an edge longer for me.
Click to expand...
My analysis from 2013 comparing an SHBM to an FBMLE.
s8tQHhm.jpg


and here is my BME Bolo done in 2015
2NJ9n53.jpg
 
number41 said:
Its incomplete? Lol no carbon.
Click to expand...
you lol'd because you don't know how a niton xl2 works?

I am by no means an expert on using the niton xl2, but what I was told is that the niton xl2, gives the ability to determine what a steel is, uses refractory laser element measurement, which does not have ability to detect low atomic number elements. But we already know that carbon is 0.55 to 0.6, and the only other element missing is nitrogen. We also know that cobalt is about 1%, so the niton is not perfect. But when it measures no cobalt in the steel, then there is no cobalt in the steel.

The original INFI was not modA8, but larrin wouldn't know because he did not have an original SHBM or SHSHII to test, to know this. What came later was Mod INFI originally used in the basic line. ModA8 was originally a term given to different formulas of A8. There has been different formulas for ModA8. Modern INFI is certainly similar to it. But I think there is still a difference. Post modA8 as you know it to see how close it is to the modern INFI formula
 
Cobalt said:
you lol'd because you don't know how a niton xl2 works?

I am by no means an expert on using the niton xl2, but what I was told is that the niton xl2, gives the ability to determine what a steel is, uses refractory laser element measurement, which does not have ability to detect low atomic number elements. But we already know that carbon is 0.55 to 0.6, and the only other element missing is nitrogen. We also know that cobalt is about 1%, so the niton is not perfect. But when it measures no cobalt in the steel, then there is no cobalt in the steel.

The original INFI was not modA8, but larrin wouldn't know because he did not have an original SHBM or SHSHII to test, to know this. What came later was Mod INFI originally used in the basic line. ModA8 was originally a term given to different formulas of A8. There has been different formulas for ModA8. Modern INFI is certainly similar to it. But I think there is still a difference. Post modA8 as you know it to see how close it is to the modern INFI formula
Click to expand...
Lol'd at myself, cause I knew I didn't know.

I see Larrins is .45% carbon.

Either way A8mod is a very good steel.
 
number41 said:
Lol'd at myself, cause I knew I didn't know.

I see Larrins is .45% carbon.

Either way A8mod is a very good steel.
Click to expand...

Yes, it is a very good steel. In fact there was a knifemaker in the 90's that used it, and his knives, though not very good looking, were tough as nails. His A8mod was this:
0.55% Carbon
0.30% Manganese
0.95% Silicon
8.25% Chromium
1.25% Molybdenum
1.25% Tungsten


When you compare that to the original INFI formula it is quite different:
Original INFI
0.5% Carbon
8.25% Chromium
1.3% Molybdenum
0.36% Vanadium
0.74% Nickel
0.11% Nitrogen
0.95% Cobalt
 
There have been a few of these threads over the years both in this subforum and general discussion. INFI is always very similar but a little different within the available and possibly flawed ways to analyze and compare it. I have come to believe (possibly erroneously) that INFI is made by Latrobe, is in their chipper steel family and is either a unique offering for Busse with a phenomenal heat treatment or another proprietary heat treatment like what makes 52100 into SR-101 and S7 into SR-77. And that belief goes back to before the threads from 2018 and 2021 that are referred to here. My opinion goes back to an Ankerson thread years before...

These threads always seem to have some kind of "Gotcha Busse fan!" moment to them too. :rolleyes: I'm not feeling deceived.
 
INFI Rocks!!!!

We and our customers have over 25 years of experience with INFI.

The "Latest and Greatest Super Steels" seem to lose favor as soon as a new one comes out.

INFI is forever!!!!

We're going to put this one to bed.

Let's Drink!

Jerry


.
 
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