Tungsten molybdenum alloys
Technical Characteristics
The melting point of tungsten is 3380 °C, and boiling - 5900 ° C, while the rate of evaporation remains minimal even at t ° 2000 ° C. Under normal conditions, it does not react with chemical reagents. It combines high hardness and brittleness with high electrical resistance. Technical tungsten contains 0.03% molybdenum.
Percentage composition of
| W | Mo | Ca | Fe | Si | Al |
|---|---|---|---|---|---|
| 99.95 | ≤0.03 | ≤0.005 | ≤0.005 | 0.001 - 0.006 | 0.001 - 0.004 |
Molybdenum
Molybdenum has a low expansion coefficient and good electrical conductivity (better than iron). Under normal conditions, this metal does not react with chemicals. In terms of strength, it is slightly inferior to tungsten, but much easier to work.
Physical properties of molybdenum (temperature 20°C)
| Characteristics | Value |
|---|---|
| Density Mo [g/cm3] | 10,22 |
| Melting point | 2620 °C (2890°K) |
| Boiling point | 4639 °C |
| Thermal conductivity [W/(m-K) | 138 |
| Oxidation grades | 6, 5, 4, 3, 2 |
| Specific heat of fusion | 28 kJ/mol |
Production
Technological plasticity of tungsten is minimal, so semi-finished products are produced by powder metallurgy. Powders of these metals are mixed to make an alloy of molybdenum and tungsten. The material has a complex composite microstructure. It consists of a mixture of the smallest metal particles that form a matrix and combines the properties of the metals that make up it, semi-finished products from this material are obtained by pressing microparticles of tungsten and molybdenum in the desired shape, sintering the compacted mass in the so-called stabik. After further heating, the stack is compacted and shaped to the desired parameters.
Application
Electrical engineering, power industry, space and aviation industry, metallurgy. Cathodes of vacuum devices, parts of rocket engines. Wire, filament is used for production of electronic devices and light sources.
The supplier
Supplier Evek GmbH offers to buy tungsten-molybdenum alloys, the price is optimal in this segment of rolled products. Full compliance with international quality standards. The supplier Evek GmbH offers to buy tungsten-molybdenum alloys from the specialized warehouses of Evek GmbH with delivery to any city.
Buy, bargain price
We offer to buy tungsten-molybdenum alloys, the price is determined by the technological features of production without including additional costs. Products with non-standard parameters can be ordered. We have the best price - quality ratio on the molybdenum alloys. Evek GmbH company is a profitable supplier. Timely delivery is ensured by representative offices in Eastern European cities.