Thoriated Tungsten Wire 0.25mm (.010") x 1' (0.3m)

Heavy-gauge research-grade, thoriated tungsten wire, sold by the foot and cut to length. Material certification is available on request.

• Material: Tungsten 99%, Thorium 1%
• Diameter: 0.25mm ±.01 (.010" ±.0005)
• Length: 1' (0.3m) min. (cut-to-length)
• Electrical Resistance: 1.14 Ω/m
• Temper: Annealed
• Finish: Carburized
• COO: Canada
• Safety Data Sheet: ThoriatedTungstenWireSDS.pdf

Thoriated tungsten offers excellent electron emission characteristics and an extremely long service life. Filaments must be activated before service (see this article). Please contact us if you have specific requirements. We can also provide filament assemblies in various configurations.