Tungsten Molybdenum Material
Tungsten Molybdenum Material: High-Performance Alloys for Demanding Applications
Tungsten Molybdenum Material represents an advanced class of refractory metals that combine the superior properties of tungsten and molybdenum. These materials are engineered to deliver exceptional performance in extreme environments, making them indispensable across various industrial sectors.
Key Characteristics of Tungsten Molybdenum Material
- High melting point (exceeding 2000°C)
- Excellent thermal conductivity
- Superior resistance to thermal shock
- Low thermal expansion coefficient
- Exceptional strength at elevated temperatures
- Good electrical conductivity
- Outstanding corrosion resistance
Technical Specifications
| Property | Value Range | Measurement Standard |
|---|---|---|
| Density | 10.2-19.3 g/cm³ | ASTM B311 |
| Melting Point | 2000-3400°C | ASTM E967 |
| Tensile Strength | 800-1400 MPa | ASTM E8 |
| Thermal Conductivity | 130-170 W/m·K | ASTM E1461 |
| Thermal Expansion | 4.5-6.5 × 10⁻⁶/K | ASTM E228 |
FAQ Section
What are the primary applications of Tungsten Molybdenum Material?
Tungsten Molybdenum Material finds extensive use in aerospace components, high-temperature furnace parts, semiconductor manufacturing equipment, medical radiation shielding, welding electrodes, and industrial heating elements. Its unique combination of properties makes it particularly suitable for applications requiring dimensional stability at elevated temperatures and resistance to thermal shock.
Available Product Forms
- Rod and bar stock (diameter: 1mm to 300mm)
- Sheet and plate (thickness: 0.1mm to 50mm)
- Wire (diameter: 0.01mm to 10mm)
- Custom machined components
- Sintered parts
- Powder for additive manufacturing
How does Tungsten Molybdenum Material compare to pure tungsten or molybdenum?
While pure tungsten offers the highest melting point among metals, Tungsten Molybdenum Material provides better machinability and improved resistance to thermal shock. Compared to pure molybdenum, our material exhibits significantly higher temperature resistance and mechanical strength. The alloy maintains most of tungsten's desirable properties while gaining improved workability from the molybdenum component, creating an optimal balance for many engineering applications.
Material Composition Analysis
| Element | Content (%) | Function |
|---|---|---|
| Tungsten | 70-95 | Provides high density and temperature resistance |
| Molybdenum | 5-30 | Improves ductility and thermal shock resistance |
| Trace Elements | <0.5 | Enhance specific properties like creep resistance |
Surface Treatment Options
- Mechanical polishing (Ra 0.1μm to 1.6μm)
- Electropolishing
- Protective coatings (gold, nickel, etc.)
- Oxidation-resistant treatments
- Grit blasting
What are the recommended machining practices for Tungsten Molybdenum Material?
Machining Tungsten Molybdenum Material requires specialized tooling and techniques. We recommend using carbide or diamond tools with positive rake angles. Maintain moderate cutting speeds (30-60 m/min for turning operations) and use ample coolant to prevent work hardening. For grinding operations, employ resin-bonded diamond wheels with light passes. All machining should be performed in rigid setups to minimize vibration, and tools should be kept sharp to prevent material tearing. Stress relief annealing may be required for complex machining operations.
Quality Assurance Standards
| Standard | Description |
|---|---|
| ASTM B387 | Standard Specification for Molybdenum and Molybdenum Alloy Forgings |
| ISO 13765 | Refractory materials - Chemical analysis |
| MIL-T-21014 | Military Specification for Tungsten Base Alloys |