Dumet .Net

Lamp Grade Dumet Wire MATERIAL DATA SHEET Dumet Wire: Lamp Grade Material description Dumet wire consists of a nickel-iron core in an oxygen-free-high-conductivity copper sheath. It is available in various surface finishes: electrically oxidised, borax coated, nickel plated, bare (uncoated) . Borated surface finish Dumet is used in Lead-in-wires for lamps . Dumet forms a glass-to-metal seal while manufacturing these lamps. The oxidised Dumet is used in Lead-in-wires, diodes and capacitor slug leads application. Composition: Core Ni C Mn Si S P Fe 41 - 43 0.05 max 1.0 max 0.30 max 0.02 max 0.02 max Rest Copper Sheath 24 ± 2% of the total weight 99.96% minimum copper with 0.00% Oxygen Two other grades of are also available: Dumet with FeNi 42 core and Copperclad 28 Mechanical Properties Co-efficient of Linear expansion (20 - 400°C) Radial 8.5 - 10.0  x 10 -6 /°C Co-efficient of Linear expansion (...

Diode Grade Dumet Wire MATERIAL DATA SHEET DUMET WIRE: Diode Grade Material description Dumet wire consists of a nickel-iron core in an oxygen-free-high-conductivity copper sheath. It is available in various surface finishes: electrically oxidized, borax coated. Borated surface finish Dumet is used in Lead-in-wires for lamps . Dumet forms a glass-to-metal seal while manufacturing these lamps. The oxidized Dumet is used in Lead-in-wires, diodes and capacitor slug leads application. Composition Core Ni C Mn Si S P Fe 46 – 48 0.05 max 0.50 max 0.30 max 0.02 max 0.02 max Rest Copper Sheath (14 - 19% of the total weigh) 99.96% minimum copper with 0.00 Oxygen Mechanical Properties Co-efficient of Linear expansion (20 - 400°C) Radial Co-efficient of Linear expansion (20 - 400°C) Axial Electrical Resistivity Microhm-cm Tensile Strength (annealed) Elongation upon fracture 9.0 – 10.5  x 10 -6 /°C 7....