Hafnium

Hafnium

Hafnium (Hf) is a lustrous silver grey, ductile, transition metal. Hafnium is found in most Zirconium minerals. It is not easy to separate these two elements due to their chemical resemblance. The Hafnium metal is further purified to crystal bars using the van Arkel/de Boer iodine process.  The crystal bars are then consolidated, electron beam (EB) is melted and processed into wires, bars, plates, and other metal forms. Hafnium is traditionally used in high-temperature superalloys and nuclear control rods.  

ARS provides pure hafnium products and hafnium alloy, hafnium fluoride with high quality and competitive prices. Below are some of our standard hafnium and hafnium alloy products. If you require customized products, please contact us by email.

Physical Properties of Hafnium

Hafnium Physical Properties
Density	gm/cc	6.11
Melting Point	°C	2227
Boiling Point	°C	4602
Thermal Conductivity	W/cm/K @ 298.2 K	0.307
Specific Heat	Cal/gm/°C	0.116
Coefficient of Linear Thermal Expansion	micro-in/°F x 10-6	5.9
Heat of Vaporization	K-Cal/gm atom at 3380 oC	106
Electronegativity	Paulings	1.6
Electrical Resistivity	micro-ohm-cm	25.4

Mechanical Properties of Hafnium

Hafnium Mechanical Properties	Metric	imperial
Tensile Strength	485 Mpa	70300 psi
Yield Strength	125 MPa	18100 psi
Elongation at Break	25%	25%
Poisson’s Ratio	0.265	0.265
Shear Modulus	54- 58 Gpa	7.83204- 8.41219 psi

Applications of Hafnium

1. In filaments and electrodes
2. In superalloys
3. As the electrode in plasma cutting
4. In gas-filled and incandescent lamps
5. In vacuum tubes as a getter
6. In control rods in nuclear power plants

Products List of Hafnium

High Purity Hafnium and Hafnium Alloys:

Shapes: Hafnium foil, hafnium wire, hafnium disc, hafnium sputtering targets, low zirconium hafnium in wire, and customized Hafnium parts

Crystal Hafnium Bar:

High-purity crystal hafnium bar, low zirconium hafnium, and other hafnium products made from crystal hafnium.