Titanium
Titanium wire (TIxxxx) is 98.9% pure, annealed, in three diameters.
Catalog No. Metal AWG* Diameter Length
TI2051 Titanium 24 0.020 in. (0.5 mm) 51 ft (15.5 m)2 Buy online 
TI4024 Titanium 38 0.040 in. (1.0 mm) 24 ft (7.3 m)2 Buy online
2 Furnished in bundles of 3 ft inch lengths.
*Brown and Sharpe