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Electron Microscopy Sciences

Vacuum Pumps and Evaporation

arrow13Metal Wire, Foils, Baskets, and Boats

arrow12Tungsten Metal Wire and Boats

Tungsten has the highest melting point and lowest vapor 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, cm3/mol: 9.53
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

Tungsten Metal Wire and Boatarrow10Tungsten Wire:

We are offering tungsten wire in 99.90% purity. Available in 0.025” (.64mm), 0.02” (.51mm), ”(0.23mm) diameters.

73800 Tungsten Wire, 0.020" (0.51mm) Diameter 20 ft 42.00 Add to Cart
73801 Tungsten Wire, 0.020" (0.51mm) Diameter 100 ft 168.00 Add to Cart
73802 Tungsten Wire, 0.025" (0.64mm) Diameter 20 ft 78.00 Add to Cart
73803 Tungsten Wire, 0.025" (0.64mm) Diameter 100 ft 360.00 Add to Cart
73804 Tungsten Wire, 0.009" (0.25mm) Diameter 20 ft 27.00 Add to Cart
73805 Tungsten Wire, 0.009" (0.25mm) Diameter 100 ft 125.00 Add to Cart

Tungsten Wire Baskets arrow102.Tungsten Wire Baskets

Clean, Vacuum grade, tungsten wire.

Basket Type Turns I.D. mm Height mm Wire Lead cm Wire Dia. Inches
A 9 4 7 3.5 0.020
C 8 7 9 5.0 0.020
D 8 9 14 4.0 0.030
73830 Tungsten Wire Basket A 50/pack 128.00 Add to Cart
73832 Tungsten Wire Basket C 50/pack 162.00 Add to Cart
73834 Tungsten Wire Basket D 50/pack 150.00 Add to Cart

arrow10Tungsten Wire Filaments

V-Shaped Filaments

High purity, vacuum grade tungsten wire 0.02" (0.50mm) diameter, V-shaped filaments ½" (12.7mm) deep, with a bottom angle of 45°, either single wire or triple strand.

Cat. # Overall Length No. Strand V- Opening Qty    
73840 3" (76.2mm) Single 3⁄4" (19mm) 10/pk 11.00 Add to Cart
73842 3" (76.2mm) Triple 5⁄8" (16mm) 10/pk 34.00 Add to Cart
73844 3½"(88.9mm) Triple 3⁄4" (19mm) 10/pk 28.00 Add to Cart
arrow10Coiled Filaments

Single or 3-strand coiled tungsten filaments, 0.5mm (0.002") diameter wires.

73938-1 4" long Horizontal Helix, Coil length 45mm (1 3⁄4") with 6 turns, 6.3mm(1⁄4") diameter coil. Single strand 5/pk 18.00 Add to Cart
73938-3 4" long Horizontal Helix, Coil length 45mm (1 3⁄4") with 6 turns, 6.3mm(1⁄4") diameter coil. Triple strand 5/pk 24.00 Add to Cart
73939-1 5" long Horizontal Helix, Coil length 51mm (2") with 12 turns, 9.5mm(½") diameter coil. Triple strand 5/pk 40.00 Add to Cart


Tungsten Foil Boatsarrow104. Tungsten Foil Boats:

Tungsten Boat B1: Thickness of tungsten foil is 0.05mm (0.002"), overall length is 32mm (1¼").
The trough: 12.7mm(L) x 9.5mm(W) x 3.2mm Deep (½" x 5⁄8" x 1⁄32")

73816 Tungsten Boat B1 5/pack 42.00 Add to Cart

Tungsten Boat B2: Thickness of tungsten foil is 0.25mm (0.010").
The overall length is 101.6mm x 19.05mm (4" x 3⁄4").
Trough: 39.37mm (L) x 2.79mm Deep, 0.92 ml

73816-B2 Tungsten Boat B2 5/pack 62.00 Add to Cart

Tungsten Boat B3: Thickness of tungsten foil is 0.25mm (0.010").
The overall length is 101.6mm x 19.05mm (4" x 3⁄4").
Trough: 39.1mm(L) x 6.35mm(W) x 3.3mmDeep, 0.5 ml

73816-B3 Tungsten Boat B3 5/pack 60.00 Add to Cart

Tungsten Boat B4: Thickness of tungsten foil is 0.25mm (0.010")
The overall length is 100.5mm x 19.05mm (3 ½" x 3⁄4").
Trough: 28.19mm(L) x 15.87(W) x 3.3mm Deep, 0.99ml

73816-B4 Tungsten Boat B4 5/pack 56.00 Add to Cart

Tungsten Boat B5: Thickness of tungsten foil is 0.25mm (0.010").
The overall length is 101.6mm x 12.7mm (4" x ½").
Trough: 9.65mm Diameter x 3.81mm Deep, 0.18ml

73816-B5 Tungsten Boat B5 5/pack 44.00 Add to Cart

Tungsten Boat B6: Thickness of tungsten foil is 0.25mm (0.010").
The overall length is 101.6mm x 39.1mm(L) (4" x ½")
Trough: 39.1mm(L) x 12mm(W) x 3.55mm Deep, 1.0 ml

73816-B6 Tungsten Boat B6 5/pack 42.00 Add to Cart

Tungsten Boat B7: Thickness of tungsten foil is 0.25mm (0.010").
The overall length is 101.6mm x 25.4mmL x (4" x 1")
Trough: 53.84mm(L)x25mm(W) x2.28mmDeep, 2.43ml

73816-B7 Tungsten Boat B7 5/pack 62.00 Add to Cart

arrow12Metal Foils

For aperture cleaning, vacuum evaporation

73820 Molybdenum foil, 0.002" thick, (0.05mm); 6x6"(15.2 x 15.2 cm) each 62.00 Add to Cart
73822 Tantalum Foil, 0.003" thick, (0.075mm); 6x6" each 212.00 Add to Cart

arrow12Pyrolytic Graphite Foil Boat

For more technical information, see Pyrolytic Graphite Stripper Film.

Boat dimensions:

Thickness of pyrolytic graphite foil is 0.51mm (0.020”) Overall length is 32mm (1.25”) and width is 9.6mm (0.375”)

Trough Dimension:

12.7 mm (L) x 9.0 mm (W) x 3.2 mm (D) (0.5 x 0.355 x 0.03”)

73808-B1 Pyrolytic Graphite Boat B1 each 112.00 Add to Cart

msdsMetal Boatsarrow12Metal Boats

For disc aperture cleaning, vacuum evaporation.
Thickness: 0.05mm (0.002") Overall length: 75mm (3")
Trough Measures: 12mm(1.2") long x 5mm (3/16") wide x 1mm deep.

73810 Molybdenum Boat 5/pack 22.85 Add to Cart
73812 Platinum Boat 1/pack 149.00 Add to Cart
73814 Tantalum Boat 5/pack 48.00 Add to Cart

EMS strives to maintain accurate pricing. However, due to fluctuations in precious metal prices, pricing on products containing precious metals is not guaranteed. We will contact you if there is a discrepancy.

arrow12Heavy Duty Wire Bending Pliers

These extra heavyduty pliers are used for bending any metal wire at a ‘V’ shaped angle, allowing for the formation of filaments in accordance to your specification.

62185 Wire Bending Pliers, 6½" (165mm) Long each 40.00 Add to Cart

Precious Metal Wiresarrow12 Precious Metal Wires

High Purity, vacuum grade. These metals wires are suitable for scanning and electron microscopy techniques.

EMS strives to maintain accurate pricing. However, due to fluctuations in precious metal prices, pricing on products containing precious metals is not guaranteed. We will contact you if there is a discrepancy.

Aluminum Wire: Purity 99.99
73000 Aluminum Wire,0.010"(0.25mm) diameter 10 ft 7.00 Add to Cart
73001 Aluminum Wire,0.010"(0.25mm) diameter 50 ft 19.00 Add to Cart
Gold Wire: Purity 99.99:
73100 Gold Wire, 0.008"(0.20mm) diameter 10 ft 375.00 Add to Cart
73101 Gold Wire, 0.008"(0.20mm) diameter 50 ft 1,725.00 Add to Cart
Molybdenum Wire: Purity 99.95:
73200 Molybdenum Wire, 0.008"(0.20mm) diameter 10 ft 20.00 Add to Cart
73201 Molybdenum Wire, 0.008"(0.20mm) diameter 50 ft 70.00 Add to Cart
Palladium Wire: Purity 99.90%
73300 Palladium Wire, 0.008"(0.20mm) diameter 10 ft 170.00 Add to Cart
73301 Palladium Wire, 0.008"(0.20mm) diameter 50 ft 550.00 Add to Cart
Palladium/Gold Wire 40:60, Purity 99.90
73400 Palladium/Gold Wire, 0.008"(0.20mm) diameter 10 ft 230.00 Add to Cart
73401 Palladium/Gold Wire, 0.008"(0.20mm) diameter 50 ft 1,050.00 Add to Cart
Platinum: Purity 99.95%
73500 Platinum Wire, 0.008"(0.20mm) diameter 10 ft 484.00 Add to Cart
73501 Platinum Wire, 0.008"(0.20mm) diameter 50 ft 2,240.00 Add to Cart
Platinum/Palladium Wire: Purity 99.90%
73600 Platinum/Palladium Wire, 0.008"(0.20mm) diameter 10 ft 319.00 Add to Cart
73601 Platinum/Palladium Wire, 0.008"(0.20mm) diameter 50 ft 1,650.00 Add to Cart
Silver Wire: Purity 99.99%
73700 Silver Wire, 0.008"(0.20mm) diameter 10 ft 39.00 Add to Cart
73701 Silver Wire, 0.008"(0.20mm) diameter 50 ft 174.00 Add to Cart
Tungsten Wire: Purity 99.99%
73800 Tungsten Wire, 0.020" (0.51mm) diameter 10 ft 42.00 Add to Cart
73801 Tungsten Wire, 0.020" (0.51mm) diameter 50 ft 168.00 Add to Cart

Carbon and Graphite for Evaporation arrow13arrow13