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Tantalum
Tantalum (Ta) is a rare, hard, blue-gray metal with excellent corrosion resistance and high melting point of 2996 °C. It is highly ductile, malleable, and stable at elevated temperatures, making it valuable in electronics, aerospace, and chemical processing. Tantalum exhibits exceptional biocompatibility, making it suitable for medical implants. It has excellent electrical conductivity and forms a passive oxide layer that protects it from acids and harsh environments.
Goodfellow’s range of Tantalum products, including Tantalum Rods, Tantalum Sputtering Targets, Tantalum Foils, and Tantalum Cylindrical Crucibles, are vital for advanced laboratory research and industrial applications. Tantalum is widely used in aerospace, electronics, and medical device manufacturing. Tantalum’s unique properties make it ideal for producing capacitors, chemical processing equipment, and implantable devices. Researchers and industry professionals rely on our high-purity Tantalum products for applications in materials science, semiconductor technology, and high-performance alloys. Goodfellow’s Tantalum offerings enable the advancement of critical technologies across various high-demand industries.
Properties
Identifiers
Isotopes
Applications
Grades
Synonyms
General Properties
| Property | Value |
|---|---|
| Atomic Number | 73 |
| Density | 16.69 g/cm³ |
| Melting Point | 3020 °C |
| Boiling Point | 5457 °C |
| Thermal Conductivity | 57.5 W/m·K |
| Electrical Resistivity | 130 nΩ·m |
| Crystal Structure | Body-Centered Cubic (BCC) |
Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | 140–275 MPa |
| Yield Strength | 110–250 MPa |
| Young’s Modulus | 186 GPa |
| Hardness | Vickers 150–200 |
| Elongation at Break | 20–50% |
| Poisson’s Ratio | 0.34 |
Chemical Properties
| Property | Value |
|---|---|
| Corrosion Resistance | Excellent; resistant to acids and alkalis |
| Reactivity | Forms stable passive oxide (Ta2O5) |
| Oxidation States | +5 (most common), +3 |
| Surface Oxide | Tantalum pentoxide (Ta₂O₅) |
| Identifier | Value |
|---|---|
| Symbol | Ta |
| Atomic Number | 73 |
| CAS Number | 7440-25-7 |
| UN Number | UN3089 (powder) |
| EINECS Number | 231-135-5 |
| Isotope | Type | Notes |
|---|---|---|
| Ta-180m | Metastable | Rare, naturally occurring isomer |
| Ta-181 | Stable | Most abundant isotope (99.988%) |
Scientific Applications
| Use Case | Description |
|---|---|
| Capacitors | Tantalum capacitors used in miniaturized electronics and aerospace |
| Thin Film Coatings | High-dielectric films for semiconductors and sensors |
| Superalloys | Alloying element in heat-resistant materials for jet engines |
| Biocompatible Implants | Used in medical implants and prosthetics due to inertness |
| High-Temperature Research | Studies on corrosion resistance and structural stability |
Industrial Applications
| Use Case | Description |
|---|---|
| Chemical Processing | Corrosion-resistant equipment and reaction vessels |
| Electronics | Manufacture of capacitors, resistors, and semiconductors |
| Aerospace | Components exposed to extreme heat and corrosive environments |
| Nuclear Industry | Structural materials and shielding |
| Vacuum Furnaces | High-temperature crucibles and heating elements |
| Grade | Description |
|---|---|
| 99.9% (3N) | Standard commercial purity with good corrosion resistance and ductility, suitable for general industrial use. |
| 99.95% (3N5) | Higher purity offering improved electrical and chemical performance for advanced electronics and research. |
| 99.99% (4N) | Ultra-high purity ideal for specialized scientific applications requiring minimal impurities and superior corrosion resistance. |
| 99.995% (4N5) | Extra-high purity used in critical aerospace and semiconductor manufacturing demanding near-perfect material quality. |
| 99.999% (5N) | Exceptionally pure tantalum for state-of-the-art scientific research and applications with the strictest material requirements. |
| Synonym |
|---|
| Tantalum Metal |
| Ta |
| Element 73 |
| Tantalium |
| Elemental Tantalum |