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Formula: Cu 86/Mn 12/Ni 2

Form: Insulated Wire

Material: Copper/Manganese/Nickel (Manganin®)

Commodity: Alloys

Conductor Diameter: 0.15mm

Insulation: Polyimide

Insulation Thickness: 0.015mm

Temper: Annealed

Polyimide-Insulated Manganin® 290 Wire

Polyimide-Insulated Manganin® 290 Wire merges the precision resistivity and low temperature coefficient of resistance of Manganin 290 alloy with the high thermal endurance and chemical resistance of polyimide insulation. It provides exceptional long-term stability in measurement circuits, making it a key material for aerospace, metrology, and industrial instrumentation. Applications include high-accuracy shunt resistors, Wheatstone bridge circuits, and stable current measurement systems in demanding conditions. In research, it is used in experiments on resistance stability under temperature cycling, alloy-polymer interface durability, and long-term drift minimization. The insulated wire’s blend of electrical precision, mechanical resilience, and polyimide protection ensures reliable performance in advanced measurement and control systems.

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Tolerance

Properties

Reference & Citations

Health hazard/Hazardous to the ozone layer

Serious health hazard

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Tolerances

Insulated Wire

Conductor Diameter		±10%
Insulation Thickness		Nominal
Length		+5% / -1%

Material Properties for Alloys

Mechanical Properties

Element	Value
Elongation at break( % )	50
Modulus of elasticity( GPa )	124-159
Izod impact strength( J m⁻¹ )	107
Tensile strength( MPa )	300-600

Electrical Properties

Element	Value
Electrical resistivity( µOhmcm )	43-48
Temperature coefficient( K⁻¹ )	0.00001

Thermal Properties

Element	Value
Maximum use temperature in air( C )	300
Melting point( C )	960
Thermal conductivity( W m⁻¹ K⁻¹ )	22@23°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ )	14-19@20-100°C