Steel

Question Of The Day: Do You Use A Titanium Knife?

Image courtesy scuba.com

Titanium has many properties to recommend it as a superb blade material. It’s utterly impervious to corrosion, monstrously tough, and far stronger than aluminum. Despite all that, it doesn’t make a great knife blade because…

Ti can’t be hardened above 50 HRC, which is very soft by knife-blade standards. Mission Knives sells some very attractive high-end Ti knives, but their blades are only hardened to 47 HRC. If you’re a diver or work in corrosive environments, steel alloys like N680 also provide superior corrosion resistance, along with far better hardness than Titanium.

 

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Discussion

4 responses to ‘Question Of The Day: Do You Use A Titanium Knife?

  1. Don’t forget about the carbidization process that many makers put on the edges of Ti blades. A carbidizer can deposit a .001-.003″ layer of tungsten carbide that rates at 72 RC.

  2. Another niche that titanium (bronze too) fills is if you need a non-ferrous/magnetic blade. That is a highly specialized role though.

    Titanium is only stronger than steel by weight. Iron alloys are much more dense so that for the same size (volume) they are stronger; iron is optimally dense for swords and knives, so much so that it almost seems like God gave it to us to make said objects with 🙂

    I might go for titanium knife but not for anywhere near the current prices for them.

  3. Despite all that, it doesn’t make a great knife blade because………….
    …..it’s never going to be super-heated or be pushed to mach speeds.
    …..it’s better as non-magnetic metal for medical implants. (MRI’s)
    …..we know what metals make good knife blades, and this ain’t it.
    …..after billions of years, the universe has commanded it to be so.

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