Tungsten evaporation boats
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Tungsten evaporation boats

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:

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
  • B1: Thickness of tungsten foil is 0.05mm, overall length is 32mm. Trough: 12.7mm (L) x 9.5mm (W) x 3.2mm (D)
  • B2: Thickness of tungsten foil is 0.25mm, overall length is 101.6mm x 19.05mm. Trough: 39.37mm (L) x 2.79mm (D), 0.92ml
  • B3: Thickness of tungsten foil is 0.25mm, overall length is 101.6 mm x 19.05 mm. Trough: 39.1mm (L) x 6.35mm (W) x 3.3mm (D), 0.5ml
  • B4: Thickness of tungsten foil is 0.25mm, overall length is 100.5mm x 19.05mm. Trough: 28.19mm (L) x 15.87mm (W) x 3.3mm (D), 0.99ml
  • B5: Thickness of tungsten foil is 0.25mm, overall length is 101.6mm x 12.7mm.
    Trough: 9.65mm diameter x 3.81mm (D), 0.18ml
  • B6: Thickness of tungsten foil is 0.25mm, overall length is 101.6mm x 39.1mm. Trough: 39.1mm (L) x 12mm (W) x 3.55mm (D), 1.0ml
  • B7: Thickness of tungsten foil is 0.25mm, overall length is 101.6 x 25.4mm.
    Trough: 53.84mm (L) x 25mm (W) x2.28mm Deep, 2.43ml
Updated: 04-06-2026
Code Type Pack Size Availability Price Updated: 04-06-2026
EMS73816 B1 Pack/5 No ETA $114.00 AUD
EMS73816-B2 B2 Pack/5 No ETA $209.00 AUD
EMS73816-B3 B3 Pack/5 No ETA $197.00 AUD
EMS73816-B4 B4 Pack/5 No ETA $173.00 AUD
EMS73816-B5 B5 Pack/5 No ETA $164.00 AUD
EMS73816-B6 B6 Pack/5 No ETA $141.00 AUD
EMS73816-B7 B7 Pack/5 No ETA $199.00 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.