Hafnium powder, -325 mesh, 99.6% (metals basis excluding Zr), Zr nominal 2-3.5%

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 0749 (OTTO) Hafnium powder, -325 mesh, 99.6% Cas 7440-58-6 - used in alloys with iron, titanium, niobium, tantalum, and other metals.