How Good is D2 Steel Knife Blades?

[Chronovore]

@Souichirou

I agree with some points but the ontario rat 2 is a solid knife that uses D2 steel and can be found around $40-50, I personally have one in my camping gear as a beater knife hasn’t failed me yet. I consider it a “Chinese D2” though its manufactured in Taiwan the steel is more than likely sourced from mainland China.

I agree VG10 is probably the best of the bunch easier to handle and sharpen and live with all in all, I like 14C28N BUT cant seem to get it as sharp as my VG10 knives.

I don’t have experience with the Rat series but their D2 models have a good reputation. I think Chinese D2 shines at that price and below. I compare it to 8Cr13Mov because at similar prices, you gain a significant increase in edge retention and only lose a little on corrosion resistance. AUS8 is similar enough to 8Cr13Mov in corrosion resistance but seems more variable in edge retention. Heat treatment and blade geometry matter a lot. Here is an interesting comparison between Ontario’s AUS8 and D2:

Edge Retention Test! AUS8 vs D2 - Ontario Rat 1 Steel Options Compared

Of course, D2 is semi-stainless. The corrosion resistance isn’t terrible. It’s just low enough to be a problem in some environments. It can require more vigilance in keeping it clean and oiled. I own a bunch of knives in Chinese D2 and I’m carrying one right now. With basic maintenance, I’ve never had it rust on me. I just like the idiot-proof hedge of more stainless steels like 14C28N, N690, VG-10, etc. Since they are easier to sharpen and do hold a decent edge, I tend to prefer them over Chinese D2.

For stainless, I like VG-10 or N690 better than 14C28N. I put 14C28N in the same ballpark as Tangram’s Acuto 440 or a good 9Cr18Mov like you get from Civivi or Real Steel.