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.
H 5024 (OTTO) Hafnium, thermal spray grade, -325 mesh, powder, 99% Cas 7440-58-6 - used to deposit wear and corrosion resistant coatings on materials, such as ceramic and metallic layers.