Manganin, Manganin Alloy, Manganin shunt, Manganin strip, Manganin wire, Nickel plated copper wire, CuMn12Ni, CuMn4Ni, Manganin copper alloy, HAI, ASTM B 267 Class 6, Class 12, Class 13. Class 43,
Manganin Alloy Description:
a) 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).
b) 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.
c) 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.
d) 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. Source: Wikipedia
Manganin Alloy Available From READE:
a) Manganin shunt
b) Manganin strip
c) Manganin wire
d) Manganin foil
Manganin Alloy Typical Chemistry:
86% copper, 12% manganese, and 2% nickel
Manganin Aa) lloy Typical Properties:
a) It has the formula weight (sum of the molecular masses of the atoms in the formula) of 177.18 g/mole.
b) This alloy has a low temperature coefficient of resistance (relative change of the physical properties of a substance with 1 K temperature change).
c) The resistivity of this resistance alloy is 4.55×10-5 ohm centimeters.
d) It is electrically conductive.
e) It has a melting point of 960 °C.
f) The tensile strength of this substance ranges between 300-600 MPa.
g) The electrical resistivity of this alloy varies between 43 and 48 µOhmcm.
h) The density of this alloy is 8.4 g/cm3.
i) It has a specific gravity of 8.5.
j) Its electrical resistance is found to be constant over a range of temperatures.
