Properties

Magnet wire is a key material for electromagnetic components such as motors, transformers, and inductors. Its performance directly impacts the efficiency, reliability, and lifespan of these devices.

The following are its key characteristics:

Uniform insulation
Excellent electrical properties: The insulating varnish resists short circuits and withstands high voltages
Temperature resistance: 105°C (Class A) to over 220°C (Class C), adaptable to various high-temperature environments
Mechanical properties: Flexible and wear-resistant, the windings are resistant to breakage and scratching
Environmental durability: Moisture-resistant, chemical-resistant, and radiation-resistant for special applications
Special features: Direct soldering, self-bonding, and high-frequency low-loss
Dimensional accuracy: Uniform varnish, round or flat wire available to meet diverse design requirements

Magnet Wire vs. Bare Wire

The key difference between magnet wire (enameled wire) and bare wire lies in the presence of insulation and their intended use. Enameled wire is a specialized conductor coated with a very thin layer of insulating varnish. Its design ensures that, when tightly wound into a coil, the turns are insulated from each other and prevent short circuits, effectively generating magnetic fields or electromagnetic induction. It is widely used in electromagnetic components such as motors and transformers.

Bare wire, on the other hand, lacks any insulation and its primary function is simply to transmit high currents or establish electrical connections. It is often used for grounding, jumpers, or power transmission. It requires spatial distance or additional insulation to prevent short circuits. Simply put, enameled wire is designed to create magnetic fields, while bare wire is designed to transmit current.

Conductor

Copper conductors offer excellent electrical conductivity, high mechanical strength, ease of welding and processing, and the best overall reliability. Aluminum conductors, on the other hand, offer lower cost and lighter weight, but at the expense of conductivity and mechanical performance. Therefore, copper is the preferred choice for most applications, while aluminum is primarily used in cost-sensitive or weight-saving applications.

Uses

Motors: Drive rotors in appliances, EVs, and industrial machines.
Generators: Produce electricity in hydro, thermal, and wind turbines.
Transformers: Convert AC voltage in chargers and substations.
Inductors: Filter, oscillate, and delay signals on circuits.
Aviation: Lightweight, durable wire for aircraft motors and sensors.