Dumet Wire
Dumet wire for Lamp
The iron-nickel alloy wire with the closest glass expansion coefficient is used as the core material, and the outer layer is covered with a good heat conduction and electrical conductivity copper layer.
The surface is reworked to form a copper oxide film/barrel, which increases the composite line between the surface of the copper layer and the good sealing of the
glass.
The surface is reworked to form a copper oxide film/barrel, which increases the composite line between the surface of the copper layer and the good sealing of the
glass.
Specification
| Commodity | Core Material | Copper ratio | Use |
| DU-A | 42Fe-Ni | 20~25% | Tube & Ball , Diode |
| DU-B | 42Fe-Ni | 24~28% | Tube & Ball |
| Commodity | Tensile Strength | Elongation | Thermal expansion coefficient(×10-7/℃) | Electric Resistance | Density | |
| (kgf/mm2) | (%) | Axis | Radius | (μΩ.cm) | ||
| DU-A | < 60 | >18 | 56~65 | 88~100 | 8~11 | 8.4 |
| DU-B | < 60 | >18 | 56~65 | 88~100 | 6~9 | 8.4 |
| Uses | Diameter | Type | Color(Thickness of Cu2O layerμm) | Surface Treatment | |
| Tube & Ball | Normal Bulb | 0.25~0.40 | A / B | M、ML、MD、D | Boration |
| NEON Bulb | 0.35~0.40 | A / B | M、MD | Oxidize | |
| fluorescent Lamp | 0.30~0.60 | A / B | ML | Boration | |
| Christmas Lamp | 0.25~0.30 | B | D (2.0) | Boration |
| Commodity | Composition | Characteristics | Parking | ||||||
| Core Material | Copper ratio (%) |
Surface Treatment | Tensile Strength(N/mm2) | Elongation(%) | Thermal expansion coefficient(×10-7/℃) | ||||
| Axis | Radius | ||||||||
| NP-Du-A | 42Ni-Fe | 20~25 | Ni plated (1.5~4.0µm) |
< 637 | > 15 | 55~65 | 88~100 | Reel/Carton Drum | |
| NP-Du-B | 42Ni-Fe | 23~28 | Ni plated (1.5~4.0µm) |
< 637 | > 15 | 55~65 | 88~100 | Reel/Carton Drum | |
Safety/Quality Approvals
1.Lead-in wires for bulbs, fluorescent lamps, energy saving lamps, Christmas lamps and auto lamps
