Tungsten-silver
[WAg 50/50 - 75/25]
Tungsten-silver (WAg) is a group of composite materials based on tungsten with approx. 50-75% W (remainder Ag). It combines the high hardness, high modulus of elasticity and wear and erosion resistance of tungsten with the very good electrical and thermal conductivity and corrosion resistance of silver. This makes WAg grades suitable for applications with electrical arc/spark loads, as contacts and electrodes and for components with good heat dissipation. The properties depend on the composition; below you will find a compact grade overview with typical characteristic values and links to material data sheets.
Grades & data sheets
| Variety | Composition | Density | Hardness (HV10) | E-modulus (GPa) | Electrical conductivity (% IACS @20 °C) | Available as | Data sheet |
|---|---|---|---|---|---|---|---|
| WAg 50/50 | W 50% / Ag 50% | 13.6 ± 0.3 g/cm³ | 90 ± 30 | 190 ± 20 | 62 ± 3 | Rods, bars, plates, tubes, finished parts | Material data sheet |
| WAg 65/35 | W 65% / Ag 35% | 14.9 ± 0.3 g/cm³ | 130 ± 30 | 240 ± 20 | 53 ± 3 | Rods, bars, plates, tubes, finished parts | Material data sheet |
| WAg 70/30 | W 70% / Ag 30% | 15.2 ± 0.3 g/cm³ | 170 ± 20 | 250 ± 20 | 50 ± 3 | Rods, bars, plates, tubes, finished parts | On request |
| WAg 75/25 | W 75% / Ag 25% | 15.5 ± 0.3 g/cm³ | 210 ± 30 | 270 ± 20 | 45 ± 3 | Rods, bars, plates, tubes, finished parts | Material data sheet |
The key features are as follows: ASTM B631, ISO 5182; contacts & electrodes
Density: 15.0 g/cm³
Electrical conductivity: ≈ 45-62 % IACS (20 °C, depending on variety) S/m
Supply programme
Rods, bars, plates, tubes and finished parts according to customer drawings
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