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Titanium as Knife Material? (Read 20153 times)
Mike
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Titanium as Knife Material?
Sep 5th, 2006 at 7:43pm
 
Hey everybody!
I want to know if titanium was a good metal to make knives out of. I have just recently acquired a piece of  titanium off of ebay that would be great for the proportions of a knife. The only properties about titanium I know of is that it is supposedly very hard metal that is about 2/3rds as light as steel and that it doesn't rust.

I also would like to know how to temper titanium, as most of the internet searches say that I have to heat it to 1700 degrees Fahrenheit and cool it in a "solution".
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Re: Titanium as Knife Material?
Reply #1 - Sep 5th, 2006 at 8:21pm
 
i have often wondered the same thing, because i have seen dive knives made from titanium, and reason dictates that if it can handle being blasted through the atmostphere at something like 1000 miles per hour, then it should hold an edge well enough.  i just don't know, since it is not a very widespread knife material, and there is not alot of material on titanium knives.
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Re: Titanium as Knife Material?
Reply #2 - Sep 5th, 2006 at 8:39pm
 
The answer be nay.


Unfortunately, Ti makes rather lousy knives as that it can't hold an edge. If you are making it for decoration, novelty and/or very light use, it's probably fine, but not an EDC item.

Many of the titanium dive knives are probably actually titanium alloys or titanium with an edge of another material.
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Re: Titanium as Knife Material?
Reply #3 - Sep 5th, 2006 at 10:19pm
 
Try alloying it. By itself Titanium is too brittle.
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Re: Titanium as Knife Material?
Reply #4 - Sep 6th, 2006 at 6:55am
 
Titanium makes good tools like schackle "unjammers", wrenches or fids... and bottle opener of course Wink
Later I'll try to post some pics of sailors multitools to give you an idea how that looks like
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Re: Titanium as Knife Material?
Reply #5 - Sep 6th, 2006 at 7:02am
 
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Re: Titanium as Knife Material?
Reply #6 - Sep 6th, 2006 at 1:56pm
 
Just be careful, if you want to try to temper it. Titanium is very flammable at high temperatures. This is why machine shops that deal with it keep the shavings in a solution, just in case there be stray sparks.
  Once ingited, titanium will burn in the presence of oxygen, any oxygen. Dousing it with water won,t help, as water has O2 in it. The only way to stop it is to let it burn out by itself.
  It is labeled a class D fire, like burning phosphorous, and similar types.
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Re: Titanium as Knife Material?
Reply #7 - Sep 6th, 2006 at 3:16pm
 
that would be hardening it not Tempering it.
but the real ? is is the peice you have already hardened
and are you going to shape by forge or by stock removal
If by stock removal aneal it first and then try not to get it hot on the grinder then heat it up and quench it then temper it Ill see if I can find the tempering specs for you if you wish. but what you will have when your don is a light ,sharp, knife only real advantage over steel being the weight, and the none rusting
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Re: Titanium as Knife Material?
Reply #8 - Sep 6th, 2006 at 3:55pm
 
Cool ideas, ya i would like to know more of the specifics about the piece of titanium before you go doubling something that might cause it to come out.... worthless or just something kinda pretty Cry
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Re: Titanium as Knife Material?
Reply #9 - Sep 6th, 2006 at 5:12pm
 
I forgot to mention that the titanium I bought is condition A, which the seller beleived to be annealed.

If I am making a knife out of titanium, I am making it by stock removal, because the titanium is 1/8th by 2 inches by 11 inches.

Some tempering specs would be helpful.
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Re: Titanium as Knife Material?
Reply #10 - Sep 6th, 2006 at 9:20pm
 
How about a titanium spined, steel razor knife which makes use of a longitudinal channel running the length of the blade's edge in which to slide the stainless razor inserts, which could simply be stropped and eventually replaced, never needing sharpening?


I'd buy one if I couldn't make it.



TS

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Re: Titanium as Knife Material?
Reply #11 - Sep 6th, 2006 at 10:34pm
 
For general knife use there are steels that will hold an edge much longer. Ti blades may be very tough, however. MadDog knives makes Ti knives touted as hard use blades. You just have to match the metal to the intended use. Ti will have a higher impact resistance but a lower abrasion resistance.

Where it really shines is corrosion resistance. I would make a couple of neck knives out if it. They would be lightweight (important when one of them is hanging around your neck) and would never rust (sweat can corrode some otherwise excellent steels). Then all you'd need would be a couple of kydex sheaths.

11" x 2" is a pretty good sized piece, though. Maybe a 6" or 6.5" drop point or spear point blade. It's very light weight would make it a good backpacking knife for the ounce counting crowd.

Let us know what you end up doing with it. Good luck.
Frank
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Re: Titanium as Knife Material?
Reply #12 - Sep 7th, 2006 at 3:34pm
 
I like the steel blade insert idea personally...

Most likely not too hard to find a piece of steel to shape down to the right size/shape

But one thing I dont know because im dumb, how do you lock it in place?

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Re: Titanium as Knife Material?
Reply #13 - Sep 7th, 2006 at 4:45pm
 
by friction..or a little screw
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Re: Titanium as Knife Material?
Reply #14 - Sep 7th, 2006 at 6:51pm
 
lol hah hah rotfl  Grin Grin Grin Grin Grin Grin Grin
tech wants to make a Titanium box cutter  Grin Grin Grin
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