Tantalum pieces
Properties
Chemical symbol: Ta
Name: Tantalum pieces
CAS No.: 7440-25-7
Molar mass: 180.95 g/mol
Density: 16.65 g/cm³
Melting point: approx. 3017 °C
Boiling point: approx. 5458 °C
Purity: typically 99.9-99.99% (3N-4N)
Color: dark gray to silvery with metallic luster
Form: irregular pieces, cut pieces or size-graded chunks
Tantalum pieces are a high-purity, pre-sized product form of the refractory metal tantalum. The material is supplied as irregular chunks, cut pieces or size-graded fragments. With a density of 16.65 g/cm³ and a melting point of approximately 3017 °C, tantalum belongs to the group of extremely high-melting elements.
One of the key properties of tantalum is its exceptional corrosion resistance. At room temperature, the metal is protected by a dense, self-healing passivation layer of tantalum(V) oxide, Ta₂O₅.
Tantalum is insoluble in water and highly resistant to most acids, including hydrochloric acid, nitric acid and aqua regia. Dissolution occurs mainly in fluoride-containing media and particularly aggressive chemical melts or mixtures.
The material combines very high density with good ductility and formability while retaining high mechanical strength. Tantalum pieces are typically supplied in purity grades from 99.9% (3N) to 99.99% (4N), with low levels of interstitial impurities such as oxygen, nitrogen and carbon.
Industrial tantalum production can involve reduction of potassium fluorotantalate K₂TaF₇ with sodium or electrochemical refining followed by electron-beam remelting. This processing route enables high-purity material with low gas content for vacuum and metallurgical applications.
Tantalum metal is particularly important in vacuum metallurgy, superalloy production, PVD processing, chemical equipment and sputtering-target manufacture. Would you like to buy tantalum? Auremo can provide information about available purity grades, piece sizes and delivery conditions. The tantalum price, tantalum metal price and tantalum price per kg depend on purity, size range, quantity and material specifications.
Advantages
• Exceptional corrosion resistance
• Protective self-healing Ta₂O₅ passivation layer
• Melting point of approximately 3017 °C
• Very high density of 16.65 g/cm³
• Good ductility and formability
• High mechanical strength
• Purity up to 99.99% (4N)
• Low gas content after vacuum electron-beam remelting
Applications
• Vacuum remelting and alloying
• Nickel- and cobalt-based superalloys
• Aerospace applications
• Turbine components
• Electron-beam PVD evaporation
• Tantalum thin films
• Vacuum coating systems
• Chemical process equipment
• Corrosion-resistant components
• Medical technology
• Feedstock for tantalum sputtering targets
• Powder- and melt-metallurgical target production
Auremo offers tantalum pieces and other high-purity refractory metals for industrial and technical applications. If you have questions about purity, piece size, available fractions or delivery conditions, please contact us directly.
