Quick Answer: Manganin Wire (100gm) is a copper-manganese-nickel resistance wire with a very low temperature coefficient of resistance between 15°C and 35°C, used for shunt resistors and resistance standards.
Last updated: October 2026
Key Features
Manganin alloy, typical composition Cu84/Mn12/Ni4
Very low temperature coefficient of resistance between 15°C and 35°C
Electrical resistivity 0.43 to 0.48 µohm m at 20°C
Melting point approx. 960°C to 1020°C
Tensile strength 300–600 MPa (annealed)
Technical Specifications
Specification
Value
Alloy
Manganin, typical Cu84/Mn12/Ni4
Resistivity
0.43 to 0.48 µohm m at 20°C
Temperature coefficient
Very low, 15°C to 35°C
Melting point
Approx. 960°C to 1020°C
Tensile strength
300–600 MPa (annealed)
About This Product
Because its resistance hardly changes with room temperature, manganin is used to make shunt resistors and resistance standards. In the lab it also serves for resistivity measurements and for resistances that must stay steady during an experiment.
Frequently Asked Questions
Why is manganin used for resistance standards?
Its temperature coefficient of resistance is very low between 15°C and 35°C, so its resistance stays steady as the room temperature changes.
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