Just how crappy is AUS 4?

[Fonly]

AUS-6 is nothing like 440C, look at the carbon/cr ratio rather than amount of each.

-Cliff

your right, Im getting mixed up, aus-6 is closer' to 440-a, then 8 to b and 10 to c, they arn't the same, just compareable.

 

[Buck268]

The funny thing is, that 440a/b/c has a higher Cr content than the AUS series, yet the few AUS (aus8 in my case) blades I've had have withstood corrosion much better than the 440 series blades I've had. Granted, I haven't had many of either, and I can't think of any particularly nice ones, but still.

 

[Cliff Stamp]

your right, Im getting mixed up, aus-6 is closer' to 440-a, then 8 to b and 10 to c, they arn't the same, just compareable.

It depends on how you are comparing them. AUS-6 has a similar hardening responce to 440C. The carbide fraction of all the 440 series is much greater than even AUS-10A.

The reason that the AUS series would be expected to have better corrosion resistance is that the high carbide fraction in the 440 series will create spots of localized Cr depletion.

-Cliff