What is Enameled Wire?
Enameled wire, also known as magnet wire, is a fundamental electronic component consisting of a metallic conductor, typically copper, coated with a thin but robust layer of electrical insulation. It is primarily used in the manufacturing of motors, transformers, inductors, and various household and industrial appliances.
The production process involves annealing the bare copper wire to achieve the desired softness and conductivity, followed by the precise application of multiple thin layers of insulating varnish or enamel. The final quality of the wire is critically dependent on factors such as the purity of the copper, the chemical composition of the enamel, manufacturing process parameters, production equipment precision, and environmental controls.
Composition of Enameled Wire:
Conductor: Usually made from high-purity copper wire, prized for its excellent electrical conductivity.
Insulation Layer: Formed by applying and curing insulating materials such as polyester or polyimide-based enamels. These coatings provide essential electrical insulation while also offering significant mechanical strength, thermal endurance, and chemical stability to meet diverse application requirements.
Classification by Wire Diameter
Enameled wire is categorized based on its conductor diameter, which determines its suitable applications:
| Category | Diameter Range | Typical Applications |
|---|---|---|
| Ultra-Fine Wire | < 0.01 mm | Internal wiring of micro-motors, miniature electronic components, and very small devices. |
| Fine Wire | 0.01 mm - 0.08 mm | Internal or surface wiring for small electrical appliances, precision instruments, and electronic devices. |
| Medium Wire | 0.08 mm - 0.30 mm | Internal or surface wiring for larger appliances, industrial instruments, and general electronic equipment. |
| Heavy-Gauge Wire | > 0.30 mm | Busbars, power leads, and high-current applications within large-scale electrical machinery and power systems. |
Key Applications Across Industries
Enameled wire is an indispensable material in several critical industries due to its unique combination of properties.
Electronics Industry: Valued for its excellent electrical properties, heat resistance, and compactness, it is the material of choice for winding coils in transformers, inductors, and chokes found on circuit boards, as well as in components like relays and small motors within electronic devices.
Appliances & Electrical Equipment: Its reliable insulation and thermal stability ensure safe and long-lasting operation in appliances that generate heat. It is widely used in the motors and transformers of household products such as fans, microwave ovens, refrigerators, and washing machines.
Automotive Industry: The demanding environment of vehicles requires components that can withstand high temperatures and vibration. Enameled wire is ideal for ignition coils, starter motors, sensors, and various control system actuators.
Aerospace Industry: Meeting the extreme requirements for high strength, light weight, and exceptional thermal performance, high-grade enameled wires are used in critical aerospace applications, including navigation systems, flight control actuators, and communication equipment.
In summary, enameled wire plays a pivotal role in modern technology. Its ability to provide efficient electrical conduction within a durable, insulated, and space-saving form factor makes it a crucial component across the electronics, appliance, automotive, and aerospace sectors.
Our product range
| Product Category | Product Name | Common Standard Grades | Key Specifications (Typical) | |
|---|---|---|---|---|
| Copper Tubes / Pipes | • Straight & Coiled Tubes • Refrigeration Tubes • Capillary Tubes • Heat Exchanger Tubes |
C11000 (ETP Copper) C12200 (DHP Phosphorous Copper) C12000 (DLP Phosphorous Copper) EN 12735-1: CU-DHP JIS H3300: C1220, C1100 |
Standards: ASTM B75, B88, B280, EN 12735 OD: 3mm - 300mm Wall Thickness: 0.3mm - 10mm Condition: Annealed (O), Hard (H) |
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| Copper Sheets / Plates | • Hot Rolled Plates • Cold Rolled Sheets • Cut-to-Size Blanks |
C11000 (ETP Copper) C10200 (Oxygen-Free Copper) C26000 (Cartridge Brass) C70600 (90-10 CuNi) |
Standards: ASTM B152, B465 Thickness: 0.5mm - 50mm (Plates: >3mm) Width: up to 1500mm Length: up to 4000mm or custom Condition: Rolled, annealed, mill finish |
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| Copper Rods / Bars | • Round, Square, Hexagonal Rods • Copper Alloy Rods • Precision Ground Bars |
C11000 (ETP Copper) C36000 (Free-Cutting Brass) C26000 (Cartridge Brass) C10200 (Oxygen-Free Copper) C17200 (Beryllium Copper) |
Standards: ASTM B187, B301, EN 12163, 12164 Diameter: 2mm - 200mm Length: Straight bars up to 6m, coils available Condition: Drawn, extruded, annealed |
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| Copper Wires | • Bare Copper Wire (Hard/Soft) • Enamelled (Magnet) Wire • Stranded & Bunched Wires • Braided Wires & Flexibles |
C11000 (ETP Copper) C10200 (Oxygen-Free Copper) C10100 (C-OF Copper) Grade: 1/2 Hard, 1/4 Hard, Soft |
Standards: ASTM B1, B2, B3, IEC 60228 Diameter: 0.05mm - 12mm (bare) Conductivity: 100% IACS min. Packaging: Spools, coils, drums |
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| Copper Foils | • Rolled Strips (in Coils) • Thin Foils • Connector Alloy Strips |
C11000 (ETP Copper) C26000 (Cartridge Brass) C19210 (Phosphor Bronze, 1.0%) C26800 (Yellow Brass) |
Standards: ASTM B152, B465, EN 1652 Thickness: 0.05mm - 3.0mm (Strips), <0.05mm (Foil) Width: 10mm - 600mm (typical coil width) Condition: Hard (H), 1/2 Hard, Soft (O), rolled temper |
Our factory
We are a specialized manufacturing factory with integrated production capabilities for copper and copper alloy products, including tubes, rods, bars, plates, sheets, strips, and wires. Our facility is equipped with modern production lines featuring extrusion presses, continuous casting machines, precision rolling mills, drawing benches, and controlled annealing furnaces, enabling us to control the entire process from raw material to finished product. Supported by an in-house laboratory for quality assurance and compliant with international standards (ASTM, EN, JIS), we provide customized solutions, reliable packaging, and efficient export logistics to serve global clients in HVAC&R, electrical, automotive, and industrial sectors.
copper product packaging
We take great care in packaging to ensure our copper products arrive in perfect condition. Standard packaging includes moisture-resistant materials, sturdy wooden crates or pallets, and protective corner guards to prevent damage during transit. For products requiring enhanced protection against oxidation, such as high-purity copper tubes or finely finished surfaces, we also offer optional nitrogen-purged (inert gas) packaging upon request. This service effectively minimizes surface oxidation during long-distance shipping or storage, ensuring your products maintain their optimal quality upon arrival.
