Our 99.95% tungsten black wire rods: dia 1.3*600 and dia 2.0*600 have been sent to Korea regular customer. The density of tungsten black wire is more than 19.2 g/cm3.
Because of the drawing conditions of tungsten wire, graphite is used as lubricant, and the surface of tungsten wire is oxidized by natural gas or electric heating. Graphite and tungsten oxide are adhered to the surface of tungsten wire, which makes black tungsten wire.
We will introduce black tungsten wire application next time.
Welcome your enquiries.
