Black molybdenum wire is molybdenum wire with graphite coating, and its surface color is black. Black molybdenum wire is always in coiling or straight. In addition, black molybdenum wire is always annealed.
There is an impurity content standard of black molybdenum wire.
Black molybdenum wire is widely used in making heat parts for electronic vacuum device, heating parts, hooks of various type of bulb, mandrels of tungsten coiled coil wire, etc