So this fan blade generated a lot more chatter than I expected...
To give a little history on myself - I have 7.5 years of aircraft maintenance experience focused predominantly on mechanical component overhaul of commercial airliners - pneumatic valves, fuel valves, hydraulic pumps and rams, landing gear, flight controls, etc... I also spent roughly 2.5 years doing gas turbine overhaul, mostly of APUs (Auxillery Power Unit, or "the little engine in the tail of the plane" as they'd be known to most casual observers). During that time I spent roughly ~2 months of that balancing gas turbine rotating parts (compressor and turbine wheels or assemblies for various Rolls Royce, GE and Pratt & Whitney engines for both main and auxillery engines), which included having to grind various materials to complete balancing tasks* and a part of which is having to maintain segregated tooling/abrasives to not contaminate the Ti components. So I'm pretty confident I know what it is, I just can't (be bothered to) prove it and I never worked with this exact part at the time as it was obsolete before my career began. Material appears identical to later items which I know were Ti.
I also don't have a container big enough, or measuring cups/jugs/whatever accurate enough to go down the path
@Dales Cannon is suggesting. (I checked, as I pulled the stand apart for a second coat of stain this morning).
From my experience, while there is also a bit of stainless used in some compressor and turbine wheels, it is generally only in thicker wheel castings as anything thin and stainless is too prone to cracking from heat cycling. Composite materials are starting to be used in gas turbine fan blades (the GE engine on the A380's were the first to pioneer this feature IIRC), but it's still Ti on the compressor section blades from my experience. Turbine sections vary a lot and I would be a lot less game to guess their composition.
At the end of the day, for me it's a momento of a former career and I'm happy the stand came up as well as it did. The blade itself is kinda cool if you're into that type of thing, but it's material composition doesn't really matter as all it's doing is decorating a desk and giving me good memories.
(*it's actually surprisingly uncommon for smaller aircraft gas turbines to use balance weights, especially on smaller APU-type compressor and turbine wheels as they just created added weight and complexity).
