I was told that grade 23 titanium was useful for applications where
strength as well as relative hardness was needed. I have not been able
to find much information on this grade online and was hoping the
professionals on this group could assist. I am looking its realtive
hardness in HRC scale, as well as its composition. I am hoping to use
it in my knifemaking for handle scales and possibly depending on
properties for knife blades.
On a different note I was wondering if titanium can be combined with
carbon like Iron is to make steel to yield a hard as well as strong
I would appreciate any help you can render and thanks so much in
Have you found this "grade 23 titanium" google search, secibd hit?
6AL4V EL1* F-136 Titanium is implant grade (23) Titanium. Titanium is
quickly becoming the preferred metal, challenging 316LVM Stainless
Steel, for body piercing jewelry world-wide.
NOT ALL TITANIUM IS SUITABLE FOR BODY PIERCING JEWELRY! There are 29
different grades of Titanium- many of which ARE NOT SUITABLE. Grade 23
(specification Ti6AL4V EL1) is recognized by standard societies world
wide, including the ASTM (USA) and the International Standards
Organization (Switzerland), for use in medical devices. Replacement body
parts are commonly made of Grade 23 Titanium and are implanted with
successful results worldwide every day and millions of people are living
with these parts! Grade 23 Titanium has been designated an F prefix by
the ASTM. This F-136 designation means that Grade 23 Titanium is an
approved medical grade material. As a result, the FDA has approved its
use in medical devices. You cant ask for a better recommendation.
As a first guess, you should look to the famous Ti-6Al-4V as a very good
baseline for your properties. This is the workhorse of the titanium
The essential difference between Ti6Al4V ELI (grade 23) and Ti6Al4V
(grade 5) is the reduction of oxygen content to 0.13% (maximum) in grade
23. This confers improved ductility and fracture toughness, with some
reduction in strength.
I'll pas on the melding of Ti and Steel metallurgy question.
Thank you but I am not concerned with the compatibility of the
titanium with human tissues. It will be used in knife production, not
body art so I need something strong AND hard. Thank you for your
contribution though, I read the same article.
Looks like somebody can't read.
You didn't read what else was written below the article, and you didn;t
know what you read in the article.
I told you how to find the data that you wanted.
I ain't gonna go hold your darned hand and put the darned data into it.
I felt that you were a bad deal to deal with from the nature of your
I was right.
On 22 Nov 2004 20:23:06 -0800, firstname.lastname@example.org (Clue) wrote:
Titanium comes in a great many grades, the numbers of which are
obscure (you can't tell what it is without looking it up in a book).
For non-aerospace and "hobby" uses though, there are just four broad
"types"; pure, 6/4, 3/2.5, Zr.
Pure titanium (aka CP (commercial pure) or grade 4). This is used
where chemical resistance is important. Reasonably soft to work. Can
be worked by hand smithing - needs to be very hot, but works
beautifully. If you find this as scrap, it's likely to be as plumbing.
6/4 (inc grade 23) This has 6% aluminium / 4% vanadium. This is the
usual aerospace grade. Very hard, if you're trying to work it. Hard
going; your tools need to be sharp and probably ground with more acute
angles than for steel. Difficult to forge, especially by hand smithing
- but it does develop an atttractive surface texture. Scrap aircraft
parts are likely to be this grade.
3/2.5 Similar to the 6/4, but less so. Not that much less strong, but
a lot easier to work. Can be drawn into seamless tube, which 6/4 can't
- so high-end titanium pushbikes are often of this grade. IMHE, it's
rarely encountered except as seamless tube.
Zirconium alloys (Zr) These are weird, and it was largely the Soviets
who used them. I know nothing of them.
Read rec.knives too
You can make scales from any of these grades, depending on what you
can get - this will probably be 6/4, just because that's the easiest
to find in the offcuts trade. CP would be easier to work though.
Ti knife .blades are a disappointment . They're possibly useful for
salt water diving, but it's a big compromise in edge performance.
It's very like steel in some ways - big complex phase diagram and the
purpose of the alloy elements is to make the phase you want stable at
your usage temperature. It's not carbon that it uses though.
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