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Cu-Ni-Mn Resistance Wire- Manganin 6j8 / 6j12 / 6j13 for Precision Instrument
Product Description
Shunt Manganin widely used for Shunt resistor with the highest requirements, shunt manganin has been used in precision built electrical components such as Wheatstone bridges, decade boxes, voltage drivers, potentiometers and resistance standards.
Chemical Content, %
Ni | Mn | Fe | Si | Cu | Other | ROHS Directive | |||
Cd | Pb | Hg | Cr | ||||||
2~5 | 11~13 | <0.5 | micro | Bal | - | ND | ND | ND | ND |
Mechanical Properties
Max Continuous Service Temp | 0-100ºC |
Resisivity at 20ºC | 0.43±0.05ohm mm2/m |
Density | 8.4 g/cm3 |
Thermal Conductivity | 40 KJ/m·h·ºC |
Temp Coefficient of Resistance at 20 ºC | 0~40α×10-6/ºC |
Melting Point | 1450ºC |
Tensile Strength(Hard) | 585 Mpa(min) |
Tensile Strength,N/mm2 Annealed,Soft | 390-535 |
Elongation | 6~15% |
EMF vs Cu, μV/ºC (0~100ºC) | 2(max) |
Micrographic Structure | austenite |
Magnetic Property | non |
Hardness | 200-260HB |
Micrographic Structure | Ferrite |
Magnetic Property | Magnetic |
Manganin 47(Precision Resistance Alloy)
(Common Name:Normal Manganin,Normal Manganin 47,CuMn12Ni2 )
Normal Manganin 47 is a copper-manganese-nickel alloy (CuMnNi
alloy) for use at room temperature. The alloy is characterized by
very low thermal electromotive force (emf) compared to copper.
Normal Manganin 47 is typically used for the manufacturing of
resistance standards, precision wire wound resistors,
potentiometers, shunts and other electrical and electronic
components.
Normal Manganin 47 widely used for precision resistors with the
highest requirements, the resistors should be carefully stabilised
and the application temperature should not exceed +60 °C. Exceeding
the maximum working temperature in air may result in a resistance
drift generated by oxidizing. Thus, the long-term stability can be
affected negatively. As a result, the resistivity as well as the
temperature coefficient of the electric resistance may slightly
change.
It is also used as low cost replacement material for silver solder
for hard metal mounting.The alloy's low emf vs. copper makes it
ideal for use in electrical circuits, especially D.C., where a
spurious thermal emf could cause malfunctioning of electronic
equipment. Due to the low operating temperature, the temperature
coefficient of resistance is controlled to be low over a range of
15 to 35°C .Normal composition%
Nickel | 2~3 | Manganese | 11~13 |
Copper | Bal. |
Typical Mechanical properties(1.0mm)
Yield strength | Tensile Strength | Elongation |
Mpa | Mpa | % |
180 | 390 | 15 |