Is the Chinese titanium in your knife really titanium?

Status
Not open for further replies.
Have you seen the story yet where the airlines bought some Chinese titanium for parts and are now discovering the titanium was counterfeited. Sound familiar?
I can't help but wonder if the titanium in our knives is the real thing.

Nonsense. Apples and oranges.

Aerospace materials come with certified test results showing that the material in question meets its specified strength and purity requirements using certified testing methods. It's not that the material wasn't titanium, it was that the certification records were not correct.

This sort of misunderstanding occurs when "journalists" with no technical knowledge try to write about technical issues.
 
One of the current issues in aerospace is that many countries have banned Russian titanium or any parts made using Russian titanium. Russia is one of the primary sources of aerospace grade titanium. So companies are scrambling. There are many different titanium alloys. Not all of them are suitable for aerospace.
 
Grade 5 / Ti-6Al-4V titanium alloy has a specific gravity of 4.43 g/cm3. If you have concerns, get a graduated cylinder and a precision scale, and check it yourself.
 
One of the current issues in aerospace is that many countries have banned Russian titanium or any parts made using Russian titanium. Russia is one of the primary sources of aerospace grade titanium. So companies are scrambling. There are many different titanium alloys. Not all of them are suitable for aerospace.


I remember as a kid the CIA had to use dummy Corps to buy titanium from USSR for the black birds!!!! Coolest plane ever, just.leaks like a sieve till its skin gets hot n swells the seams closed😱......And they did that on purpose😉
 
Ti 6Al 4V Aerospace spec is AMS4911
Then there's ASTM B265 Gd 5 for non aerospace applications. Different testing but still Ti 6-4
Domestic Ti 6-4 is around 3X the cost of the Russian or Chinese equivalent AMS4911 grade.
DFARS (Defense Federal Acquisition Regulation Supplement) compliant is required on most domestic aero applications.
The cost difference is staggering, If knife-makers had to budget for domestic Ti you would see a trail of tears.....
 
I do notice that "titanium" in many knives may have other metals such as aluminum in the alloy in varying degrees. In electric anodizing I notice that certain scales do not get the color that the voltage would suggest. For example: I have a Benchmade full size Skirmish... the scales do not color the way newer titanium scales do. I cover the detent ball with clear nail polish and still does not get to the bright green that 110 v normally delivers... Personally I think that those older scales were actually hard coat anodized which is a different process altogether.
 
Status
Not open for further replies.
Back
Top