Hafnium foil, 3 mm thick, 99.9%

Hafnium is a chemical element with symbol Hf and atomic number 72. A lustrous, silvery gray, tetravalent transition metal, hafnium chemically resembles zirconium and is found in zirconium minerals.
(Stored under water)

H 3307 (OTTO) Hafnium foil, 3 mm thick, 99.9% - used in electronic and semiconductor application.