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Copper wire is an electrically conductive wire made of copper, which is flexible and can be easily shaped. It comes in different sizes and types, including bare and insulated, and is used in various applications such as electrical wiring and electronics.

Key Technical Specifications

  1. Diameter: Constantan wire is available in a range of diameters, typically from 0.001 inch (0.0254 mm) to 0.100 inch (2.54 mm).
  2. Resistance: The resistance of Constantan wire depends on its diameter and length. For example, a 24-gauge Constantan wire with a length of 100 feet (30.5 meters) has a resistance of approximately 8.94 ohms.
  3. Tensile strength: Constantan wire has a high tensile strength, typically around 100,000 psi (689.5 MPa).
  4. Melting point: The melting point of Constantan wire is around 1220°C (2230°F).
  5. Corrosion resistance: Constantan wire is resistant to corrosion and oxidation, making it suitable for use in harsh environments.
  6. Applications: Constantan wire is commonly used in the construction of resistors, thermocouples, and heating elements, as well as in various other electrical and electronic applications.
Specification Feature Benefit
Composition 55% copper and 45% nickel Low temperature coefficient of resistance
Diameter 0.001 inch (0.0254 mm) to 0.100 inch (2.54 mm) Range of sizes for various applications
Resistance Depends on diameter and length Consistent resistance over temperature changes
Tensile strength Around 100,000 psi (689.5 MPa) High strength for durability and reliability
Melting point Around 1220°C (2230°F) Can withstand high temperatures
Corrosion resistance Resistant to corrosion and oxidation Suitable for use in harsh environments
Applications Resistors, thermocouples, heating elements, etc. Versatile for various electrical applications


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