One of my friend has a company named Hantug Custom Guitars and can build custom trems, saddles and as you may guess, guitars. Last week they have completed a brand new floating trem made all titanium. Trem block, saddles, baseplate and even the studs.
Hantug Titanium Guitar Tremolo with Titanium Saddles
String Spacing: 52mm (E to E)
Tremolo Block : Titanium Ti6Al-4V (Grade 5)
Base Plate : Titanium Ti6Al-4V (Grade 5)
Baseplate : Titanium Ti6Al-4V (Grade 5)
Mounting Studs : Titanium Ti6Al-4V (Grade 5)
Tremolo Claw and springs are included.