Tantalum Wire

CAS Number:	7440-25-7
Standard:	ASTM B365, ASTM F560 (Medical Grade), ISO 13602
Purity:	≥99.9% or 99.95%
Size:	Diameter 0.1-4.0mm (0.004"-0.158") 0.10mm-0.15mm, tolerance:±0.005mm >0.15mm-0.30mm, tolerance: ±0.006mm >0.30mm-4.0mm, tolerance: ±0.007mm
Material Grade:	R05200, unalloyed tantalum, electron-beam furnace or vacuum-arc melt, or both R05400, unalloyed tantalum, powder-metallurgy consolidation.

 

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Product Description

Tantalum wire is a thin, high-purity metal wire manufactured from tantalum. It is renowned for its exceptional resistance to corrosion, high melting point, and excellent conductivity. Tantalum wires are widely used in electronics, aerospace, medical implants, and other precision applications requiring durability and stability under extreme conditions.

 

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Features and Properties

Corrosion Resistance: Withstands strong acids, including hydrofluoric acid.

Thermal Stability: Operates efficiently in high-temperature environments exceeding 2000°C.

Ductility: High flexibility allows for easy fabrication into various forms.

Conductivity: Excellent electrical and thermal conductivity.

Biocompatibility: Ideal for medical implants and surgical devices.

 

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Product Forms

Straight Wire: Cut to specific lengths as per application.

Coiled Wire: Ideal for bulk and continuous processes.

Fine Wire: For precise applications in electronics and medical devices.

 

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Production Method and Production Equipments

Vacuum Electron Beam Melting: Ensures high-purity tantalum raw material.

Hot Rolling and Drawing Machines: For initial shaping and thinning of the wire.

Annealing Furnaces: Relieves stress and enhances ductility.

Precision Drawing Equipment: Achieves desired diameters with high accuracy.

Surface Cleaning Systems: Removes oxidation or impurities for a polished finish.

 

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Applications and Related Industries

Electronics: Used in capacitors, anodes, and cathodes for its high conductivity and resistance to oxidation.

Medical Field: Applied in pacemakers, hearing aids, and dental appliances due to biocompatibility.

Chemical Industry: Utilized in chemical processing equipment exposed to corrosive environments.

Aerospace: Essential in high-temperature applications and precision instruments.

3D Printing: Used as a filament material for specialized additive manufacturing processes.

 

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Interesting Facts

Tantalum wire is often used in the manufacture of surgical sutures and prosthetics due to its inert nature.

In the electronics industry, it plays a critical role in producing tantalum capacitors.

Its ability to form a stable oxide layer makes it highly reliable for long-term applications.

 

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Synonyms

Ta Wire

Tantalum Filament

High-Purity Tantalum Wire

 

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Health & Safety Information

Toxicity: Non-toxic in solid form; fine wires or dust particles should be handled with care to avoid inhalation risks.

Handling Precautions: Use gloves and protective eyewear during handling and machining.

Storage Recommendations: Store in a clean, dry environment to maintain material integrity.

 

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Chemical Composition

Element	C	O	N	H	Fe	Mo	Nb	Ni	Si	Ti	W
R05200	0.01	0.015	0.01	0.0015	0.01	0.02	0.1	0.01	0.005	0.01	0.05
R05400	0.01	0.03	0.01	0.0015	0.01	0.02	0.1	0.01	0.005	0.01	0.05

Mechanical Properties

Product condition	Tensile strength, MPa	Elongation, %
Annealed	300～600	10～30
Half annealed	>600～1000	<5
Unannealed	>1000	<5

Chemical Identifiers

Linear Formula	Ta
MDL Number	MFCD00011252
EC No.	231-135-5
Beilstein/Reaxys No.	N/A
Pubchem CID	23956
SMILES	[Ta]
InchI Identifier	InChI=1S/Ta
InchI Key	GUVRBAGPIYLISA-UHFFFAOYSA-N

Tantalum Wire Properties (Theoretical)

Molecular Weight	180.94
Appearance	Silvery-gray solid
Melting Point	3017 °C
Boiling Point	5458 °C
Density	16.69 g/cm3 (20 °C)
Solubility in H2O	N/A
Crystal Phase / Structure	α: body-centered cubic (bcc) / β: tetragonal
Electrical Resistivity	131 nΩ·m (20 °C)
Electronegativity	1.5 Paulings
Heat of Fusion	36.57 kJ/mol
Heat of Vaporization	753 kJ/mol
Poisson's Ratio	0.34
Specific Heat	140 J/kg·K
Thermal Conductivity	57.5 W/m·K
Thermal Expansion	6.3 µm/m·K
Vickers Hardness	870–1200 MPa
Young's Modulus	186 GPa

 

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