Tungsten (UNS R07000 / R07005)
Tungsten is a metal of extremes. Boasting the highest melting point of all metallic elements at 3,422°C, it is the only material capable of maintaining structural rigidity at temperatures where most other metals have long since turned to vapor. With a density nearly twice that of lead, Tungsten provides exceptional mass and radiation shielding capabilities in a compact volume.
At Aries Alloys, we supply high-purity Tungsten for the most rigorous thermal and mechanical environments. It is the definitive choice for high-vacuum furnaces, aerospace propulsion, and nuclear shielding where failure is not an option.
Key Performance Benefits
- Highest Melting Point: Unrivaled resistance to heat, making it the standard for filaments, electrodes, and rocket nozzles.
- Extreme Density: At 19.3 g/cm^3, it provides superior radiation shielding (X-ray and Gamma) and serves as an ideal ballast for aerospace and automotive balancing.
- High Elastic Modulus: One of the stiffest metals known, offering incredible resistance to deformation under extreme stress.
- Lowest Vapor Pressure: Critical for high-vacuum applications, ensuring the material does not contaminate the environment even at high temperatures.
- Superior Hardness: Resistant to wear and abrasion, especially when utilized in its carbide form or as a heavy alloy.
Technical Profile & Composition
The Density Advantage:
Tungsten’s density is comparable to gold, allowing it to provide heavy-duty performance in small packages. While pure Tungsten (99.95%+) is used for electrical and thermal applications, at Aries Alloys, we also provide Tungsten Heavy Alloys (W-Ni-Fe or W-Ni-Cu). These alloys offer improved machinability and ductility while maintaining the signature high density.
Mechanical & Physical Data:
- Melting Point: 6192°F (3422°C)
- Density: 19.30 g/cm^3
- Thermal Conductivity: 174 W/m·K
- Linear Expansion: 4.5 μm/m·K (Extremely low, ensuring dimensional stability)
Primary Industrial Use Cases
Aries Alloys sources Tungsten for mission-critical sectors:
- Aerospace & Defense: Rocket engine nozzles, kinetic energy penetrators, and balance weights for aircraft control surfaces.
- Medical Technology: Radiation shielding for CT scanners and X-ray tubes, as well as collimators for radiotherapy.
- Vacuum Technology: Heating elements, evaporation boats, and radiation shields for high-temperature furnaces.
- Electrical & Lighting: Electrodes for TIG welding (GTAW), power contacts, and specialized filaments.
- Industrial Tooling: Bored bars and grinding quills where high rigidity and vibration damping are required.
Product Availability at Aries Alloys
- Round Bars & Rods: Precision rods for electrodes, fasteners, and machining weights.
- Sheets & Plates: Durable flat products for radiation shields and furnace liners.
- Wire: High-performance wire for heating elements and vacuum applications.
- Tungsten Heavy Alloys: Machinable grades (W-Ni-Fe) for complex shielding and balance parts.
- Crucibles: Custom-shaped containers for melting rare earth metals and high-purity materials.