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Master Bond adhesives

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Materion R270 Copper-Manganese-Nickel Resistor Alloy
Categories: Metal; Nonferrous Metal; Copper Alloy

Material Notes: Materion R270 Resistor Alloy is a Copper-Manganese-Nickel alloy with low resistivity and very low Thermal Coefficient of Resistance (TCR). Commonly used for precision resistors, R270 is produced using a patented casting process, which produces homogeneous alloying and consistent, stable performance. Compare with Manganin®. Available forms include wire, formed wire, strip, and sheet.

Information provided by Materion.

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Physical PropertiesOriginal ValueComments
Density 8.19 g/cc
 
Mechanical PropertiesOriginal ValueComments
Hardness, Vickers <= 130
Tensile Strength, Ultimate 45.0 - 55.0 ksi
Tensile Strength, Yield 15.0 - 20.0 ksi
Elongation at Break 40.0 - 50.0 %
Modulus of Elasticity 20000 ksi
Poissons Ratio 0.330
 
Electrical PropertiesOriginal ValueComments
Electrical Resistivity 0.0000380 - 0.0000420 ohm-cm
 
Thermal PropertiesOriginal ValueComments
Specific Heat Capacity 0.400 J/g-°C
Thermal Conductivity 20.0 W/m-K
Melting Point 960 °C
Maximum Service Temperature, Air 60.0 °C
 
Component Elements PropertiesOriginal ValueComments
Copper, Cu 86.0 %
Manganese, Mn 10.0 %
Nickel, Ni 4.00 %

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NBB92174 / 323532

Rulon Bearings

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