Manganese Copper Wire for Precision Resistors and Shunts

Manganese Copper Wire Used As U-Shaped M-Type Door Type Spring Type Sampling Resistor

Characteristics of Manganese Copper Wire (manganin wire)
Manganese copper wire is a precision resistance alloy with the following characteristics:
Electrical resistivity: 470 ± 30 μ Ω· m, similar to that of constantan.
Temperature coefficient of resistance: as low as 1/40 of copper, suitable for environments between 5-50 ℃.
Processing performance: Made into wire with a diameter of 0.03-8.0mm through drawing process.
Antioxidant performance: Weak, storage period should not exceed 6 months.
Welding performance: argon arc welding process is preferred.
Application areas: Sampling resistors and precision resistor components in instruments and electronic devices.
Manganese copper wire has become an indispensable material in modern electronics and industrial equipment due to its excellent performance and wide applications.

Product introduction:

Common name: Manganin, Manganina 43, Alloy290

Chemical composition % and main parameters:

Manganin wire is essential in applications requiring high precision, stability, and low thermal drift. Its unique composition ensures reliable performance in demanding electrical and measurement systems.

Key Properties of Manganin Wire:

1. Low Temperature Coefficient of Resistance (TCR):

• Manganin maintains nearly constant resistance over a wide temperature range (typically ±20 ppm/°C), making it ideal for precision resistors.

2. High Resistivity (~0.47 µΩ·m):

    Allows for compact resistor designs without excessive length.

​3. Minimal Thermoelectric Voltage (vs Copper):

• Reduces errors in sensitive measurements.

4. Good Mechanical Properties:

• Can be drawn into fine wires and shaped for various applications.

Advantages of manganin product:

• Precision resistors (shunts, decade boxes, calibration standards)

• Current sensing (ammeters, power measurement)

• Strain gauges & sensors (due to stable resistance under stress)

• Laboratory and industrial instruments requiring stable resistance

Tankii can supply manganin round wire, flat wire, strip. bar.

Tankii's Advantages:

1. Competitive Pricing
2. Strategic Locations- Worldwide partners to provide immediate support.
3. Worldwide Product Acceptability-Reputable companies preferred choice.
4. Customized Designs-Experienced Engineers support to special applications.
5. OEM Capability- Your Brand, Our Quality
6. Trustworthy-Reliable and Dependable partner.

More pictures for your reference:

Application fields of manganin

Manganin is typically used for the manufacturing of

• Resistance standards, 
• Precision wire wound resistors, 
• Potentiometers, 
• Shunts 
• And other electrical and electronic components.

For further information, please don't hesitate to contact us.