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Formula: Ta
Form: Single Crystal
Material: Tantalum
CAS Number: 7440-25-7
Commodity: Metals
Purity:
99.999%
Tantalum Single Disk Crystals are part of Goodfellow's range of single crystal products. With 270 variations available, these disks open doors for researchers across disciplines like physics, chemistry, and materials science who seek high-purity, boundary-free crystals oriented in specific directions. Applications include monochromators and analyzers for spectroscopy and diffractometry, as well as electrodes for electrochemistry. The precise control over crystal structure makes tantalum disks ideal for investigating fundamental properties. By providing a wide selection of disks, Goodfellow empowers scientists to select the optimal variation for probing phenomena from catalysis to quantum transport.
Tolerances
Single Crystal
| Orientation | See Item | |
|---|---|---|
| Thickness | +2% / -1% | |
| Length | +2% / -1% |
Disk
| Diameter | +2% / -1% |
|---|
Material Properties for Metals
Atomic Properties
| Element | Value |
|---|---|
| Atomic number | 73 |
| Crystal structure | Body centred cubic |
| Electronic structure | Xe 4f¹⁴ 5d³ 6s² |
| Valences shown | 2,3,4,5 |
| Atomic weight( amu ) | 180.9479 |
| Thermal neutron absorption cross-section( Barns ) | 22 |
| Photo-electric work function( eV ) | 4.1 |
| Natural isotope distribution( Mass No./% ) | 180/ 0.012 |
| Natural isotope distribution( Mass No./% ) | 181/ 99.988 |
| Atomic radius - Goldschmidt( nm ) | 0.147 |
| Ionisation potential( No./eV ) | 1/ 7.88 |
| Ionisation potential( No./eV ) | 2/ 16.2 |
Mechanical Properties
| Element | Value |
|---|---|
| Material condition | Hard |
| Material condition | Soft |
| Poisson's ratio | 0.342 |
| Poisson's ratio | 0.342 |
| Bulk modulus( GPa ) | 196.3 |
| Bulk modulus( GPa ) | 196.3 |
| Tensile modulus( GPa ) | 185.7 |
| Tensile modulus( GPa ) | 185.7 |
| Hardness - Vickers( kgf mm⁻² ) | 200 |
| Hardness - Vickers( kgf mm⁻² ) | 90 |
| Tensile strength( MPa ) | 760 |
| Tensile strength( MPa ) | 172-207 |
| Yield strength( MPa ) | 705 |
| Yield strength( MPa ) | 310-380 |
Electrical Properties
| Element | Value |
|---|---|
| Electrical resistivity( µOhmcm ) | 13.5@20@20°C |
| Superconductivity critical temperature( K ) | 4.47 |
| Temperature coefficient( K⁻¹ ) | 0.0035@0-100°C |
| Thermal emf against Pt (cold 0C - hot 100C)( mV ) | 0.33 |
Physical Properties
| Element | Value |
|---|---|
| Boiling point( C ) | 5425 |
| Density( gcm⁻³ ) | 16.6@20°C |
Thermal Properties
| Element | Value |
|---|---|
| Melting point( C ) | 2996 |
| Latent heat of evaporation( J g⁻¹ ) | 4165 |
| Latent heat of fusion( J g⁻¹ ) | 174 |
| Specific heat( J K⁻¹ kg⁻¹ ) | 140@25°C |
| Thermal conductivity( W m⁻¹ K⁻¹ ) | 57.5@0-100 |
| Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) | 6.5@0-100°C |
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Tantalum Powder Formula: Ta
Percentage Purity: 99.9%
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Tantalum Foil Formula: Ta
Percentage Purity: 99.9%
Thickness: 0.0015mm
Length 1: 30mm
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Molybdenum Thin Film Disk Formula: Mo
Percentage Purity: 99.9%
Thickness: 0.1µm
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