Coiled horizontal helix tungsten wire filaments

Coiled FilamentsSingle or 3-strand coiled tungsten filaments, 0.5mm diameter wires.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 TungstenChemical symbol:WAtomic Radius:2.02?Atomic Volume:9.53cm3/molCovalent Radius:1.3?Crystal Structure:Body centered cubeNumber of Electron (with no charge):

Coiled Filaments

Single or 3-strand coiled tungsten filaments, 0.5mm diameter wires.

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:	2.02?
Atomic Volume:	9.53cm3/mol
Covalent Radius:	1.3?
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:	0.62?
Cross Section:	18.5 barns ? 0.5

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