aus8 vs 8cr14mov

[seniormcblade]

which is better i heard claim the later is a better metal. was i told wrong.

 

[ooitzoo]

In my experience they are pretty similar; generally good rust resistance and hold an edge adequately.

I have a Sog Aegis and a Spyderco Byrd knife. I use the Aegis a bit more so it required more touch up.

That said, neither of them are nearly as rust resistant as my VG10 Endura/Delica.

 

[marcinek]

Unless one's a metallurgist....I gotta think they are pretty much the same thing.

Though I hear AUS-8 has a better Knoop hardness, and the other has a better Young's modulus. Of course, Ostrogovsky's constant has to be taken into account....

 

[unit]

I would suggest that the processing will be AS important as the differences in metallurgy.

Different makers heat treat the steels differently...they also may grind the knives differently resulting in different geometry.

What makes a steel "better" in your opinion? There are MANY correct answers to this question....almost every BF member has a different one.

 

[seniormcblade]

Unless one's a metallurgist....I gotta think they are pretty much the same thing.

Though I hear AUS-8 has a better Knoop hardness, and the other has a better Young's modulus. Of course, Ostrogovsky's constant has to be taken into account....

thats what i thought but unit had a better answer. but according to my masters in metallurgy i agree markinecki. its got to be constant. you know i assume.

 

[Dorito Monk]

I've found that AUS-8 will tend to roll or deform after enough use. I've found 8cr13(14?)MoV, on the other hand, to chip like crazy. Although they hold their edges for similar amounts of time, in my experience, it is much easier to restore Aus-8 to a useable edge, as you don't have to waste time removing nicks and chips from the edge like you do with the chinese alphabet-soup steels.

I prefer Aus-8, although I think that steels like 440C, 13c26 and 14c28 are all better 'mid-level' steels and usually available in similar price ranges to aus-8 or 8cr14Mov.

 

[A.P.F.]

I've found that AUS-8 will tend to roll or deform after enough use. I've found 8cr13(14?)MoV, on the other hand, to chip like crazy. Although they hold their edges for similar amounts of time, in my experience, it is much easier to restore Aus-8 to a useable edge, as you don't have to waste time removing nicks and chips from the edge like you do with the chinese alphabet-soup steels.

I prefer Aus-8, although I think that steels like 440C, 13c26 and 14c28 are all better 'mid-level' steels and usually available in similar price ranges to aus-8 or 8cr14Mov.

+1 :thumbup: Such has been my experience too.

 

[seniormcblade]

lol chinese aplha soup that be a whole lot of letters.:thumbup:

 

[Gator97]

All 3 alloys are so close in composition (8Cr13MoV vs. 8Cr14MoV vs. AUS8 composition comparison), you'll have hard time telling any difference if they're HTed properly.

 

[knarfeng]

aus8 vs 8cr14mov
which is better i heard claim the later is a better metal. was i told wrong.

IIRC the AUS8 has fewer impurities and the tolerances on its composition are tighter, so you get a more uniform performance, batch to batch.

Sal Glesser says that AUS 8 has better corrosion resistance, but has stated that the edge retentions are quite similar.

I've run side by side edge retention tests of those two alloys, I measured the hardness of each and found both to be 59. I could not differentiate between them in edge retention when cutting manila rope.

In daily use I doubt you'd notice the difference.