0.08mm Manganin Copper Nickel Alloy Wire for Low Voltage Instrumentation with 0.44±0.04 ohm·mm²/m Resistivity and 585 MPa Tensile Strength
Manganin wire is specifically engineered for low voltage instrumentation applications requiring the highest precision standards. These resistors must be carefully stabilized, with application temperatures not exceeding +60°C to prevent oxidation-induced resistance drift that could compromise long-term stability and affect resistivity and temperature coefficient properties.
| Ni | Mn | Fe | Si | Cu | Other | ROHS Directive |
|---|---|---|---|---|---|---|
| 2-5 | 11-13 | <0.5 | micro | Bal | - | ND | ND | ND | ND |
| Property | Value |
|---|---|
| Max Continuous Service Temperature | 0-100°C |
| Resistivity at 20°C | 0.44±0.04 ohm·mm²/m |
| Density | 8.4 g/cm³ |
| Thermal Conductivity | 40 KJ/m·h·°C |
| Temperature Coefficient of Resistance at 20°C | 0-40 α×10⁻⁶/°C |
| Melting Point | 1450°C |
| Tensile Strength (Hard) | 585 MPa (min) |
| Tensile Strength (Annealed, Soft) | 390-535 N/mm² |
| Elongation | 6-15% |
| EMF vs Cu, μV/°C (0-100°C) | 2 (max) |
| Micrographic Structure | Austenite |
| Magnetic Property | Non-magnetic |
| Hardness | 200-260 HB |
Condition: Bright, Annealed, Soft
- Wire: 0.02mm-1.0mm (spool), >1.0mm (coil)
- Rod/Bar: 1mm-30mm diameter
- Strip: 0.01mm-7mm thickness, 1mm-280mm width
Enameled condition is available upon request.
- Wire wound precision resistors
- Resistance boxes
- Shunts for electrical measuring instruments
Manganin foil and wire are essential in resistor manufacturing, particularly for ammeter shunts, due to their virtually zero temperature coefficient of resistance and exceptional long-term stability. Historically, Manganin resistors served as the legal standard for the ohm in the United States from 1901 to 1990. The material is also utilized as an electrical conductor in cryogenic systems, minimizing heat transfer between electrical connection points.
Additionally, Manganin finds application in high-pressure shock wave gauges for explosive detonation studies, offering low strain sensitivity combined with high hydrostatic pressure sensitivity.
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