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V-shaped tungsten wire filaments
High purity, vacuum grade tungsten wire 0.50mm diameter, V-shaped filaments 12.7mm deep, with a bottom angle of 45°, either single wire or triple strand.
| Product | Overall Length | Strands | V-Opening |
| EMS73840 |
76.2mm | Single | 19mm |
| EMS73842 |
76.2mm |
Triple | 16mm |
| EMS73844 |
88.9mm | Triple | 19mm |
Tungsten has the highest melting point and lowest vapour pressure of all metals, and at the temperatures over 1650°C has the highest tensile strength. It has excellent corrosion resistance and is attacked only slightly by most mineral acids.
Tungsten is the most useful material used in vacuum evaporation technique, due to its special properties and cost factor.
Properties of Tungsten
| Chemical symbol: | W |
| Atomic Radius: | 2.02Å |
| Atomic Volume: | 9.53cm3/mol |
| Covalent Radius: | 1.3Å |
| Crystal Structure: | Body centered cube |
| Number of Electron (with no charge): | 74 |
| Atomic Number of Protons: | 74 |
| Number of Neutrons (most common/stable nuclide): | 110 |
| Ionic Radius: | 0.62Å |
| Cross Section: | 18.5 barns ± 0.5 |
| Code | Size | Pack Size | Availability | Price | Updated: 04-06-2026 |
|---|---|---|---|---|---|
| EMS73840 | 76.2mm x 19mm | Pack/10 | No ETA | $65.00 AUD | |
| EMS73842 | 76.2mm x 16mm | Pack/10 | No ETA | $115.00 AUD | |
| EMS73844 | 88.9mm x 19mm | Pack/10 | No ETA | $101.00 AUD |
* Availability Explanation
X weeks – the estimated lead time, based on the average time taken previously to fill orders from this particular supplier. Lead times are from when we receive your order until when we fill your order. For delivery times, please see shipping information below.
In Stock – Plenty of stock on the shelf, ready to ship.
No ETA – our supplier has advised they cannot provide an accurate ETA. Generally there is some issue with supply, and it may be more than 6 months.
