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Grade: Hafnium > 0.2%
Composition: Zr
Form: Pellet/Lump
Material: Zirconium
CAS Number: 7440-67-7
Commodity: Metals
Purity:
99.2%
Zirconium pellets (hafnium > 0.2%) are compact metal forms designed for controlled alloying, evaporation, and demanding applications in research and nuclear power. The presence of hafnium provides excellent corrosion resistance, a high melting point, and neutron absorption capacity, while maintaining a zirconium content suitable for high-purity processes. Its applications include feedstock for thin film deposition in electronics, neutron absorbers in reactors, and alloy additions in superalloys. More specifically, they are used in reactor control, heat shielding, and high-performance alloy engineering. In research, their applications include the study of phase equilibria, high-temperature oxidation resistance, and advanced nuclear fuel concepts. Their compact format allows for precise use in controlled environments, making them essential in nuclear engineering, aerospace superalloys, and advanced materials science.
Tolerances
Pellet/Lump
| Maximum Lump Size | Nominal |
|---|
Material Properties for Metals
Atomic Properties
| Element | Value |
|---|---|
| Atomic number | 40 |
| Crystal structure | Hexagonal close packed |
| Electronic structure | Kr 4d² 5s² |
| Valences shown | 2,3,4 |
| Atomic weight( amu ) | 91.22 |
| Thermal neutron absorption cross-section( Barns ) | 0.182 |
| Photo-electric work function( eV ) | 3.8 |
| Natural isotope distribution( Mass No./% ) | 96/ 2.8 |
| Natural isotope distribution( Mass No./% ) | 92/ 17.1 |
| Natural isotope distribution( Mass No./% ) | 91/ 11.2 |
| Natural isotope distribution( Mass No./% ) | 94/ 17.5 |
| Natural isotope distribution( Mass No./% ) | 90/ 51.4 |
| Atomic radius - Goldschmidt( nm ) | 0.16 |
| Ionisation potential( No./eV ) | 4/ 34.34 |
| Ionisation potential( No./eV ) | Jun-99 |
| Ionisation potential( No./eV ) | 2/ 13.13 |
| Ionisation potential( No./eV ) | 1/ 6.84 |
| Ionisation potential( No./eV ) | 5/ 81.5 |
| Ionisation potential( No./eV ) | 3/ 22.99 |
Mechanical Properties
| Element | Value |
|---|---|
| Material condition | Polycrystalline |
| Material condition | Soft |
| Poisson's ratio | 0.38 |
| Poisson's ratio | 0.38 |
| Bulk modulus( GPa ) | 89.8 |
| Bulk modulus( GPa ) | 89.8 |
| Tensile modulus( GPa ) | 98 |
| Tensile modulus( GPa ) | 98 |
| Hardness - Vickers( kgf mm⁻² ) | 85-100 |
| Tensile strength( MPa ) | 350-390 |
| Yield strength( MPa ) | 250-310 |
Electrical Properties
| Element | Value |
|---|---|
| Electrical resistivity( µOhmcm ) | 44@20@20°C |
| Superconductivity critical temperature( K ) | 0.61 |
| Temperature coefficient( K⁻¹ ) | 0.0044@0-100°C |
| Thermal emf against Pt (cold 0C - hot 100C)( mV ) | 1.17 |
Physical Properties
| Element | Value |
|---|---|
| Boiling point( C ) | 4377 |
| Density( gcm⁻³ ) | 6.49@20°C |
Thermal Properties
| Element | Value |
|---|---|
| Melting point( C ) | 1852 |
| Latent heat of evaporation( J g⁻¹ ) | 6360 |
| Latent heat of fusion( J g⁻¹ ) | 211 |
| Specific heat( J K⁻¹ kg⁻¹ ) | 281@25°C |
| Thermal conductivity( W m⁻¹ K⁻¹ ) | 22.7@0-100°C |
| Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) | 5.9@0-100°C |
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