Mysterious titanium plate

Mecha said:
Yeah I was thinking about radioactivity too! XD Just hoping something like that wouldn't get shipped loose through a rail yard.

"Mysterious radioactive titanium plate knives."

Has a nice ring to it.
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And it goes with your logo. :D
 
Danke42 said:
That's the good old F-35 I bet. It has a huge Titanium firewall/bulkkead that was showcased on PBS in the Nova episode Battle of the X-Planes. It's been a few yeas since I watched it but I'm betting it's made from 6-4.
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Only the F-35B STOVL variant for the Marines / Royal Navy with the giant lift fan that sits just aft of the pilot has this bulkhead. It's to protect the pilot in case the lift fan comes apart catastrophically while running. ;) However, I have NO idea what kind of Ti was/is used for this part. (I did engineering/test work on the -B for ~5 years.)
 
Mecha said:
Yup @gonebad395 and Lapedog Lapedog ,
The A-10 Thunderbolt's bathtub uses ti alloy armor that is as thick as the mysterious ti alloy plate, but there is no way this thing is from an A-10, as far as I can reckon. Nobody is scrapping the A-10, and they better not even try. :mad:
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There has been at least one A-10 crash inside the US and from the looks of that plate MAYBE...

Then again, military choppers have titanium armor around the fuel tank and engine, and kevlar elsewhere.
 
If I remember the pictures I was shown correctly that F-35 STOVL bulkhead/firewall is ribbed, still a big hunk of Ti. Here's a link to the 496 bulk heads that run along the fuselage. The firewall/bulkhead behind the pilot in the STOVL variant is similar, thicker, Ti not Al and without the big hole of course.

https://image.slidesharecdn.com/ncs...-martin-presentation-12-728.jpg?cb=1345446363

Don't think that plate came from that bird. Really guessing a fancy pressure vessel of some kind.
 
EricV said:
If I remember the pictures I was shown correctly that F-35 STOVL bulkhead/firewall is ribbed, still a big hunk of Ti. Here's a link to the 496 bulk heads that run along the fuselage. The firewall/bulkhead behind the pilot in the STOVL variant is similar, thicker, Ti not Al and without the big hole of course.

https://image.slidesharecdn.com/ncs...-martin-presentation-12-728.jpg?cb=1345446363

Don't think that plate came from that bird. Really guessing a fancy pressure vessel of some kind.
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Good point about the ribbing/machining on the bulkheads. This is done obviously to reduce weight. I do not recall exactly what the bulkhead behind the pilot looks like, as it's been over 10 years ago now, but I would also agree that it is really unlikely that piece of Ti came from JSF.
 
If I recall correctly there is a metal that is transparent to certain wavelengths of light, I think either IR or UV.

It might be Gallium, but I can't remember.
 
Lapedog said:
If I recall correctly there is a metal that is transparent to certain wavelengths of light, I think either IR or UV.

It might be Gallium, but I can't remember.
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It better not be Gallium. We'll never get see through doors made of a metal that melts at 90*F. :(
 
Yup there's no way it came from a JSF. A crashed A10? Maybe but unlikely. Most likely a pressure vessel, I would say.

There IS a chance it's grade 38 aka ATI mil-425, and was mismarked or misunderstood by the phantom engraver to be alloy 4-2-5.

What I can say is that is is definitely alloyed, and resembles grade 38 more than any of the other ti alloys I've worked with, which is about 10 various alloys. They are all markedly different from each other in sound and feel, how they smell when ground, and the color change when heated.

When this gets sliced up, I intend to have it tested because there's enough of the metal to be worth it.

The Ti Nb stuff I use for swords was tested three times.

Fun fun fun!
 
danbot said:
Mecha Mecha
This article may be of some interest to you.
http://www.labmanager.com/news/2017...-breakthrough-in-material-design#.WcVjqjUpCUk
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Mecha said:
That is really interesting danbot! The foamed titanium and aluminum that comes out of Japan floats as well, but it's just foam metal, not an actual crystalline structure like that aluminum!
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Wow, that is a really interesting article! Wish there was more technical detail. The possibilities that could open up... :cool: :thumbsup:
 
Grease said:
It better not be Gallium. We'll never get see through doors made of a metal that melts at 90*F. :(
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Nor will we see the bullets that destroy other metals...
 
If that hunk was new what would you estimate the price to be ?
I'm thinking like $700 ? ?
 
I've been watching this thread from the beginning..very interesting! I'm excited to see what knives/hatchets/alien daggers/etc. this plate transforms into and to see if the community can figure out where it came from or what it actually is. That'd be super cool and impressive
 
Wowbagger said:
If that hunk was new what would you estimate the price to be ?
I'm thinking like $700 ? ?
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If it was a government project you're probably off by about 2-3 zeros, GE charges them $10k apiece for the turbine blades my Mecha projects came from.:eek:

~Chip
 
WValtakis said:
If it was a government project you're probably off by about 2-3 zeros, GE charges them $10k apiece for the turbine blades my Mecha projects came from.:eek:

~Chip
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Yes it has a lot to do with extreme purity, x-raying every piece, testing every batch, it all has to be perfect. That turbine blade is (was :D) an amazing feat of engineering.

Wowbagger Wowbagger So the "new" price has a lot to do with its intended purpose and certifications. As for this chunk, brand new as a brick of scrap in common alloy 6al4v, the price could be $700 (but it varies). A more uncommon ti alloy like this one's price would normally be higher.
 
I just want a commemorative token to put on my keychain for having read 5 pages of this speculation.

And for having read the lyrics to Blues Bender's video link. Real lyric quote: "I take sacks to the face whenever I can"
That was pure poetry.
 
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