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High-Performance Blades Sharing ideas for getting the most out of our steel.

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  #1  
Old 07-31-2004, 11:28 PM
Jeff Sorensen Jeff Sorensen is offline
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Titanium Blade?

I recieved some titanium the other day. They were some drop
pieces, 1/8" thick by 1" wide by 12" long, as well as a few thinner
pieces and even more on the way. It is labeled as grade 2 titanium.
Will this in any way make a decent knife blade?

Thanks for any replies,
Jeff
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  #2  
Old 08-01-2004, 07:53 AM
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DanCrabtree DanCrabtree is offline
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From what ive heard titanium doesnt make a good blade material but is commonly used as fittings and sides on folders. Its a really tough metal but from what I heard its not a good blade material... Notice im using the words from what I heard.


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  #3  
Old 08-01-2004, 02:25 PM
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rhrocker rhrocker is offline
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Quote:
Originally Posted by Jeff Sorensen
I recieved some titanium the other day. They were some drop
pieces, 1/8" thick by 1" wide by 12" long, as well as a few thinner
pieces and even more on the way. It is labeled as grade 2 titanium.
Will this in any way make a decent knife blade?

Thanks for any replies,
Jeff
Jeff, I understand that it hardens in the 40's I believe I read that in Wayne Goddards book), so it would be pretty marginal as a blade, except of course for something like a letter opener. It would sure make a heck of a neat colored blade though. I've been wanting to experiment with a blade made of Titanium, just haven't got around to it yet. It would be good as a collectors knife, that would be mostly displayed, but the buyer would have to be made aware of it. The color variations and possibilities are endless. You might get Peter Atwoods video on coloring titanium, it's a valuable resource, and Peter does a great job of teaching the how-to's. One trick he shows is to lay some netting over the ti part to be anodized, then spray something 3-M spray adhesive (for photos) over the netting, then remove the net and anodize, the pattern is striking.
Anyway, give it a try and tell let us know how it works for you, and have fun!


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  #4  
Old 08-01-2004, 03:00 PM
Florian P. Florian P. is offline
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Short version
Grade 1 and grade 2 is unalloyed titanium and by that too soft for knives. For knifeblades only alloyed titanium is hard enough (and in comparison to steel still quite soft).

Long version
I have no HRC-values for unalloyed titanium, but for titanium-alloys:
"beta titanium" has between 44 and 46 HRC, TiAl6V4 (used eg. for framelock-frames) has about 38 HRC

2 examples for beta-titanium:

1. Beta III (UNS R 58030) Ti-11,5Mo-6Zr-4,5Sn ~ 40 HRC
2. Titan Beta 21S (UNS R 58210) Ti-3Al-0,3Fe-15Mo-28Nb-0,2Si ~ 43,6 HRC
If 0.25% Oxigene is added than you get about 46 HRC.

The advantage of titanium is that it doesn't rust, but it's hard to machine & beta titanium is quite expensive. I would only use it for a divers' knife.

Hope that helps.
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  #5  
Old 08-02-2004, 02:37 AM
Gabe Newell Gabe Newell is offline
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I have a number of titanium blades with press-fit stellite edges.

Another alternative is to coat the edge. Warren Thomas did a bunch of these:



Warren Thomas Carbide edged Titanium knives at BladeArt

There are a lot of titanium dive knives being made:

http://scuba.about.com/cs/equiprevie...niumknives.htm

Ocean Master has a titanium formulation they claim HRC of 51-54.



Ocean Master Material Properties

There are also a variety of titanium concoctions being tried, for example Boker has both Titanium-carbide and sintered Titanium/Ceramic/Silver blades.

Boker Titanium-Carbide knives

Boker Titanium-Ceramic-Silver knives


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  #6  
Old 08-02-2004, 03:55 PM
Jeff Sorensen Jeff Sorensen is offline
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Thank you for all of the replies. I will probably make a few knives just as conversation pieces or oversized letter openers. They would probably make neat butter knives for dinner.
Thanks again for all of the replies
Jeff
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  #7  
Old 08-02-2004, 04:11 PM
AwP AwP is offline
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That would be the sweetest butter knife ever, maybe you could make a few and some forks and a Ti pie server to go with it and have a desert set.


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  #8  
Old 10-14-2015, 02:36 PM
Sgp918 Sgp918 is offline
 
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jknives,
Any update. I am interested in making a scuba diving knife.


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  #9  
Old 11-22-2016, 01:07 AM
machinedock machinedock is offline
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i think there are some swords also according to size of them....
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  #10  
Old 06-25-2021, 05:33 PM
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billyO billyO is offline
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Quote:
Originally Posted by CharlesTHarring View Post
Have you tried to search for it online?
Hello Charles. I'll suggest checking the dates before responding to threads. The OP's question was almost 15 years ago, and the most recent post was about 5 years ago, so I'm not sure the folks with the questions need an answer anymore.
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