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Hafnium (Hf) Sputtering Target

Chemical Formula: Hf
Catalog Number: ST0019
CAS Number: 7440-58-6
Purity: 99.9%
Shape: Discs, Plates, Column Targets, Step Ta
Atomic Weight: 178.49
Atomic Number: 72
Color/Appearance: Gray Steel, Metallic
Thermal Conductivity: 23 W/m.K
Melting Point (°C): 2,227
Coefficient of Thermal Expansion: 5.9 x 10-6/K
Theoretical Density (g/cc): 13.31
Z Ratio: 0.36
Sputter: DC
Max Power Density* (Watts/Square Inch): 50
Type of Bond: Indium, Elastomer
Export Control (ECCN): 1C231




Description

Chemical Elements

Hafnium

Hafnium is a chemical element originated from Copenhagen, Denmark (with the Latin nameHafnia). It was first mentioned in 1911 and observed by G. Urbain and V. Vernadsky. The isolation was later accomplished and announced by D. Coster and G. von Hevesy. “Hf” is the canonical chemical symbol of hafnium. Its atomic number in the periodic table of elements is 72 with location at Period 6 and Group 4, belonging to the d-block. The relative atomic mass of hafnium is 178.49(2) Dalton, the number in the brackets indicating the uncertainty.