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Tantalum Straight Wire
Available Configurations
Properties common to all products in this list
| Other Variant |
|---|
| Spooled wire |
Need custom configurations? Please contact us.
Key Features
Tantalum Straight Wire provides cut, dimensionally stable lengths of one of the most chemically inert structural metals available, suited to applications requiring a precisely defined wire element that maintains its geometry under mechanical or thermal load without corrosion or surface degradation:
Near-Universal Chemical Inertness
Tantalum resists attack by virtually all inorganic acids except hydrofluoric acid and fuming sulfuric acid, and forms a stable self-passivating oxide that maintains corrosion protection even after surface deformation. This inertness makes it the material of choice for components requiring reliable chemical stability in aggressive process and physiological environments.
Well-Documented Biocompatibility Across Implant Applications
Biocompatibility is confirmed across cardiovascular, orthopaedic, and dental implant applications, where both chemical inertness and biological safety are non-negotiable. Tantalum straight wire is used as surgical suture wire, catheter guide wire, and implantable electrode elements where long-term compatibility with biological tissue is required.
Straight, Cut-Length Format for Precise Dimensional Control
The straight, cut-length format maintains dimensional precision and defined wire geometry for direct integration into electrode assemblies, reactor internals, and furnace support structures without further straightening or preparation.
Melting Point 2,996 °C and Stable Self-Passivating Oxide
A melting point of 2,996 °C and the stable self-passivating oxide support long-term structural and chemical integrity in high-temperature electrochemical apparatus and vacuum furnace environments.
Radiopacity for Medical Imaging Compatibility
Tantalum’s high atomic number provides radiopacity, allowing implanted tantalum wire components to be visualised under X-ray and fluoroscopic imaging, supporting surgical placement and post-operative monitoring of implant components.
Industrial Applications
Tantalum Straight Wire is used wherever chemical inertness, biocompatibility, and a precisely defined straight wire geometry are all required simultaneously:
- ✦ Surgical Suture Wire and Catheter Guide Wire
- Used as surgical suture wire and catheter guide wire, where confirmed biocompatibility across cardiovascular and orthopaedic implant applications, chemical inertness in physiological fluids, and radiopacity for imaging compatibility are all required in a precisely dimensioned wire element.
- ✦ Implantable Electrode Elements
- Applied as implantable electrode elements in biomedical devices, where tantalum’s combination of chemical inertness in biological environments and biocompatibility over extended implant periods meets the requirements of long-term in vivo electrode applications.
- ✦ Chemical Reactor Internals and Corrosion-Resistant Fasteners
- Used as reactor internals, heat exchanger support elements, and corrosion-resistant mechanical fasteners in aggressive process environments where precise length, dimensional stability, and resistance to virtually all mineral acids are operational requirements.
- ✦ Electrode Wire in High-Temperature Electrochemical Apparatus
- Applied as electrode wire in high-temperature electrochemical apparatus, where the stable self-passivating oxide and melting point of 2,996 °C support reliable, long-term electrode performance under combined thermal and chemical stress.
- ✦ Support Wire in Vacuum and Controlled-Atmosphere Furnaces
- Used as support wire in vacuum and controlled-atmosphere furnaces, where dimensional stability under thermal load and chemical compatibility with the furnace atmosphere maintain structural integrity across repeated high-temperature cycles.
Material 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 |
| 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 |
| Element | Value |
|---|---|
| Electrical resistivity( µOhmcm ) | 13.5@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 |
| Element | Value |
|---|---|
| Boiling point( C ) | 5425 |
| Density( gcm⁻³ ) | 16.6@20°C |
| Element | Value |
|---|---|
| Melting point( °C ) | 3017 |
| 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 |
Tolerances
| Diameter | ±10% | |
|---|---|---|
| Length | +5% / -1% |