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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 8012 (OTTO) Hafnium sputtering target dia x thickness 2 inch × 2 mm, ≥99.95% - used in electronic and semiconductor application.