Titanium for blades? 60rc titanium dive knife!

J

jaymeister99

Joined
Sep 14, 2010
Messages
819
Anybody used titanium for a dive knife blade?

I saw a production titanium dive knife somewhere online that claimed a RC of 59-60 and supposedly held an amazing edge. They would not say what type of titanium it was. I work in aerospace and Ive been told titanium doesnt get over the high 40s (almost always use 6al4v).

Anybody know anything about titanium alloys besides 6al4v?
 
Last edited:
I am interested in this as well as you. Perhaps we will be lucky enough to have the "numbers man" come in and tell us. He has the right answer for most any question. Frank
 
If there is a Ti alloy that can achieve that level of Rc hardness, then I am unaware of it. Most likely the knife that you spoke of either has something like a Nitride treatment, or has some other "feature" that they are not advertising. If there is such a thing as a titanium alloy that will achieve that type of hardness, and somebody knows about it....I'm all ears!
 
Wow, it is advertised as an RC of 60. Don't know what the formulation is but it sounds intriguing.
 
Interesting. I wonder how they are doing this. I've been adding carbide to the edge of my Ti knives, and wasn't aware of any other methods.
 
Mission Knives uses "beta titanium" but I've never seen them advertise anything like 60 RC. I have 3 of their knives and as well as they do cut, they do not approach 60.
 
Esav Benyamin said:
Mission Knives uses "beta titanium" but I've never seen them advertise anything like 60 RC. I have 3 of their knives and as well as they do cut, they do not approach 60.
Click to expand...

Ocean Master sells a "regular" Beta titanium knife too that they say runs up to a 47rc. But this claim of 60rc on the "Custom Formulated Beta" blew me away.
 
For "Custom Formulated" read "magic, wonderful". The whole spiel reads like a late night tv infomercial, long on fancy words, short on quantifiable, technical specifications.
 
I know that some titanium can be heat treated, and there is alpha, beta and alpha beta. There are high strength high hardness alloys such as 6-6-4 that, when heat treated, I believe can approach 300 KSI tensile yield which is probably pretty close to the same yield point as HRC60 steel, so I wonder if they're extrapolating values? I doubt it would measure the same as steel in a Rockwell C test, in part due to the way that particular hardness test measures hardness. I would think that a diamond penetrator is going to behave differently in titanium than in steel (all else being equal) because titanium is only about half as stiff as steel. hum....

This is a good question for Mete.
 
You must log in or register to reply here.
Back
Top