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Hafnium 99.95%

High Purity Hafnium Metal (Hf)

Material TypeHafnium
Atomic Weight178.49
Atomic Number72
Color/AppearanceGray Steel, Metallic
Thermal Conductivity23 W/m.K
Melting Point (°C)2227
Coefficient of Thermal Expansion5.9 x 10-6/K
Theoretical Density (g/cc)13.31

1. Appearance and description:

High-purity hafnium, also known as crystalline hafnium, is a silver-gray metal crystal with a metallic luster;Chemical formula: Hf; Molecular weight: 178.49 Density: 13.31 g/cm3; Melting point: about 2227℃Boiling point: about 4602℃.

2. Properties:

It has good corrosion resistance, is not easily corroded by general acid and alkali aqueous solutions, and is easily soluble in hydrofluoric acid to form fluorine complexes. At high temperatures, hafnium can also be directly combined with oxygen, nitrogen and other gases to form oxides and nitrides; hafnium is relatively stable in the air, and powdered hafnium is very easy to burn; hafnium has a large thermal neutron capture cross-section, and hafnium has a prominent Nuclear energy is a rare material indispensable for the development of the atomic energy industry.

3. Purpose:

Mainly used in the production of hafnium-based alloy materials, jewelry alloy addition, alloy smelting addition, CVD evaporation coating and other industries. It is also used in the atomic energy field or in the military field.

ItemPurityMain ImpuritiesTotal ImpuritiesTest Method
High Purity Hafnium99.9%Mg 、Al 、Si 、P 、S 、V 、Cr 、Mn 、Fe 、Co Ni 、Zn 、Ag<50ppmICP-MS
Ultra Pure Hafnium99.95%<10ppmGDMS
Utra High Purity Hafnium99.99%<1ppmGDMS