Hafnium (Hf) is a highperformance refractory metal known for its extremely high melting point, excellent oxidation resistance, and strong neutronabsorption capability. These properties make it vital in advanced aerospace alloys, where it improves hightemperature strength and oxidation resistance in turbine blades and jetengine components.
In the nuclear sector, Hafnium’s superior neutroncapture efficiency supports its use in control rods and reactor safety systems. Its stability at elevated temperatures also enables reliable performance in plasmacutting electrodes, hightemperature coatings, and specialized furnace hardware.
Hafnium plays a key role in semiconductor manufacturing as well, where its oxides serve as highk dielectric materials for nextgeneration transistor gate structures. With its combination of thermal endurance, chemical stability, and functional versatility, Hafnium is essential to modern aerospace, energy, and microelectronics technologies.
General Properties
| Properties | Value |
| Element Name | Hafnium |
| Symbol | Hf |
| Atomic Number | 72 |
| CAS Number | 7440586 |
| EC (EINECS) Number | 2311664 |
| Appearance | Steelgray metal |
| Atomic Weight | 178.486 |
| Density | 13.28–13.3 g/cm³ at 20 °C |
| Melting Point | 2233 °C (2506 K) |
| Boiling Point | 4600–4603 °C (4873–4876 K) |
| Crystal Structure | Hexagonal closepacked (hcp) |
| Hardness | Mohs hardness ~5.5; Vickers 1520–2060 MPa |
| Thermal Conductivity | ~23 W/(m·K) |
| Electrical Resistivity | 331 nΩ·m at 20 °C |
| Electronegativity (Pauling) | 1.3 |
Product Availability
We supply highpurity Hafnium (Hf) pellets, shot, ingots, powders, oxides, alloys and precisionmachined parts engineered for industrial applications requiring exceptional thermal resistance.
| Purity | Up to 99.99% (4N) |
| Forms | Pellets, Shot, Ingots, powders & oxide or custom req |
| Components | machined or customfabricated Based on drawings |
| Packaging | Vacuumsealed, moistureprotected packaging |
For inquiries regarding Hafnium materials, alloys and parts, please contact our sales team for details at sales@american-gmg.com.