15N20 vs 8670, the three properties compared?

[David Mary]

My understanding has been that 15N20 is nearly as tough, and at least equal, if not slightly superior to 8670 in both wear resistance, and corrosion resistance, at the same hardness and finish. Just looking for correction if this is wrong. Thanks.

 

[Crag the Brewer]

My understanding has been that 15N20 is nearly as tough, and at least equal, if not slightly superior to 8670 in both wear resistance, and corrosion resistance, at the same hardness and finish. Just looking for correction if this is wrong. Thanks.

Tougher, when the harder you go.
*from memory

 

[Meridian]

8670 is tougher but 15n20 is no slouch either. I'd be interested to see the wear resistance and edge stability at higher hrc.

 

[DanF]

Larrin recently posted about 15N20. I’d link to it but I don’t “computer” well. That post showed some comparisons.

 

[DanF]

Deleted, Larrin picked it up.

 

[Larrin]

How to Heat Treat Nickel Knife Steels - 15N20, 8670, L6 - Knife Steel Nerds

Thanks to the new Knife Steel Nerds Patreon supporters! Fikes Lee, Dennis Toland, mlknhny, Immenreiner, Robert Pearce, Andrew Lakey, and Scott Amstutz. It is thanks to your support that I can do experiments like the ones you find in this article. YouTube Video Here is a video version of the...

knifesteelnerds.com

Wear resistance and corrosion resistance are very similar. Corrosion and staining are highly dependent on surface finishing and random internet comments on which steels are most “reactive” are all over the place so I would take those with a grain of salt.