tinfoil hat timmy
Gold Member
- Joined
- Aug 21, 2014
- Messages
- 20,029
4V is tough, 3V is tougher
3V (delta) has good edge stability, 4V (optimized) is even better
3V has good wear resistance, 4V is better
3V has good corrosion resistance, 4V does not
Knives made in Delta 3V are expensive, knives made in optimized 4V are very expensive.
Delta 3V is a better all-around knife steel for most people, but 4V works well in high performance cutting applications where you're willing to trade some toughness wiggle room and corrosion resistance for the best edge durability and very good wear resistance. Optimized 4V will out cut Delta 3V, though we've managed to break a few in rough testing and it does rust.
All else being equal, you can cut through a nail with optimized 4V with less edge damage than Delta 3V, and that is saying something. It is worth pointing out that industry standard heat treat 4V does not give this performance (we tested it and variations of it) so any prior experience someone may have with 4V may not be applicable.
Most people are going to prefer Delta 3V due to the larger margin for error in rough use and easier maintenance, but for hard core knife nuts optimized 4V is a very interesting material. I would take 4V into a cutting competition and 3V into a war zone.
THIS IS EXACTLY what I was looking for Nathan. I hope the new machining center isn't giving you too many headaches during initial setup.
There are a lot of characters here at the forums that think they know everything there is to know about knives, blades and steel; they need to stop posting for a solid 4-6 months while they read every single one of Nathan Carothers' posts - they might actually learn something for once.![]()
This is a fact. Nathan is a smart fellow, and I learned a few things from him... Such as that the 3v used in his blades actually HARDER than the carbide used to Mill out a blank. I didn't understand this at first, but Nathan just has a way of simplifying things so even I can understand them.
That's no easy thing btw.
Keep up the good work Nathan!