Tungsten's Chemical name is Wolfram, which was the first name of this glider's co-designer Hirth, who built it under the shortened name Wolf Hirth.
Hirth also built gliders with Schempp.
And yes, in its Carbide form it's universally used as a very hard (but brittle) material for cutting tools and drills, often plated with Gold-coloured Titanium Nitride TiN, mistakenly called tin plating. Lesson over, Ill get me coat......