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Manganin 43 Manganin 130 copper-manganese-nickel alloy used in potentiometers

Short Description:

The precision resistance alloy MANGANIN is especially characterized by low temperature coefficient between 20 and 50 °C with a parabolic shape of the R(T) curve, high long term stability of electrical resistance, extremely low thermal EMF versus copper and good working properties.


  • product Name: Manganin
  • diameter: 0.05mm
  • surface: Bright surface
  • shape: round wire
  • sample: accepted small order
  • origin: Shanghai, China
  • Product Detail

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    Manganin is a trademarked name for an alloy of typically 86% copper, 12% manganese, and 2% nickel. It was first developed by Edward Weston in 1892, improving upon his Constantan (1887).

    A resistance alloy with moderate resistivity and low temperature coefficent. The resistance/temperature curve is not as flat as the constantans nor are the corrosion resistance properties as good.

    Manganin foil and wire is used in the manufacture of resistors, particularly ammeter shunts, because of its virtually zero temperature coefficient of resistance value[1] and long term stability. Several Manganin resistors served as the legal standard for the ohm in the United States from 1901 to 1990.[2] Manganin wire is also used as an electrical conductor in cryogenic systems, minimizing heat transfer between points which need electrical connections.

    Manganin is also used in gauges for studies of high-pressure shock waves (such as those generated from the detonation of explosives) because it has low strain sensitivity but high hydrostatic pressure sensitivity.


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