Dumet Wire

Lead-in wires and dumet wire are used in lead-in assemblies for various types of lamps and electronic components. Dumet wire is the core metal of lead-in wires and provides a vacuum-tight glass-to-metal seal by combining a Fe-Ni alloy core with a copper sheath in precisely controlled proportions. It is manufactured by wrapping or electroplating copper onto the alloy wire, followed by redrawing, annealing, and borating treatment. Dumet wire is widely used for match-sealing electron tubes, bulbs, diodes, and semiconductors to soft glass, with different types suitable for decorative lighting, CFL lamps, automotive bulbs, flickering bulbs, and waterproof LED and lamp applications.