Explore our premium grade enameled conductor lines engineered for transformers, motors, and high-frequency power electronics.
In modern electromagnetic design, paint coated magnet wire (frequently referred to as enameled wire) serves as the core medium for electro-mechanical energy conversion. By insulating highly conductive metal cores with ultra-thin, high-dielectric polymer films, designers are able to construct compact coils with optimal space fill factors.
As global industries transition toward electrified transportation, high-frequency industrial automation, and ultra-high voltage grids, the technical requirements for enameled coatings have shifted. Traditional formulations are being replaced with multi-layered composite coatings—such as polyesterimide (EIW) overcoated with polyamide-imide (AIW)—to resist high thermal stress, mechanical friction, and high-frequency voltage surges (corona discharge).
Achieving mechanical consistency and electrical integrity requires state-of-the-art wire drawing and automated vertical/horizontal paint extrusion ovens. Our factory employs inline laser micrometer monitoring to ensure cross-sectional uniformity, minimizing resistance hot-spots and mechanical failures during high-speed winding.
Daiming Electrical is a leading manufacturer of high-quality enameled wires, including enameled aluminum wires, enameled copper wires, and enameled copper-clad aluminum (CCA) wires.
Situated on a sprawling 258,333.33 ft² advanced manufacturing site, our production facility houses 30 state-of-the-art production lines. This robust infrastructure enables us to maintain a stable, high-volume output, ensuring seamless global supply integration.
With rigorous quality control systems regulating every phase of production—from pure electrolytic raw material inspection to high-voltage spool testing—we guarantee our products conform to international benchmarks, delivering long-term thermal stability and mechanical resilience.
Understanding the electrical, physical, and thermal characteristics of copper, aluminum, and copper-clad aluminum conductors.
| Property Parameter | Enameled Copper Wire | Enameled Aluminum Wire | Copper Clad Aluminum (CCA) |
|---|---|---|---|
| Electrical Conductivity (% IACS) | 100% - 101% | 61% - 62% | 63% - 68% |
| Density (g/cm³) | 8.89 | 2.70 | 3.63 |
| Thermal Expansion (10⁻⁶/K) | 16.5 | 23.1 | 18.0 - 21.0 |
| Tensile Strength (MPa) | 220 - 380 | 80 - 150 | 120 - 200 |
| Weight Ratio (for same resistance) | 100% | 50% | 58% |
| Typical Thermal Classes Available | 130, 155, 180, 200, 220 | 130, 155, 180, 200, 220 | 130, 155, 180 |
Select a category to view specialized enameled wires and continuous transposed conductors.
Why Tier-1 industrial enterprises choose Suzhou Daiming as their long-term electromagnetic winding partner.
Each roll undergoes inline high-voltage pinhole and eccentricity scanning, ensuring highly uniform concentric paint layers for consistent dielectric performance.
Engineered with composite insulating resins to withstand up to 220°C continuous temperatures. Highly resistant to mechanical scratching and stress cracks.
Tailored physical and electrical properties including custom thickness, flat aspect ratios, and custom insulation builds matching IEC, NEMA, or JIS standards.
Backed by 30 high-throughput automated lines, we protect global manufacturing projects against material delays and logistics fluctuations.
Fully RoHS and REACH compliant. Our products help increase the slot-fill factor in highly efficient motors, significantly reducing energy losses.
Consult with our engineering team for customized dimensional tolerance sheets, test reports, and customized spool designs.
Request Technical Consultation →Our paint coated magnet wires enable efficient electrical conversion across high-reliability global industrial segments.
In order to integrate into supply chains globally, enameled wire must comply with rigorous international testing standards. Our products are fully tested to conform to the IEC 60317 standard group, NEMA MW 1000, and JIS C 3216 guidelines.
All raw electrolytic copper and aluminum batches are verified for chemical purity before entering the wire drawing block. Additionally, our factories maintain standard environmental control systems to keep out dust particles that could compromise insulation consistency.
We offer customizable packing options (including DIN, PT, and tapered spools) to match automated terminal winding equipment, reducing handling damage and boosting winding efficiency.
Our chemical and metallurgical engineering departments assist clients in choosing proper enamel compositions and cross-sectional geometries for high-stress applications.
How the automotive shift to higher system voltages is reshaping the polymer insulation architecture of magnet wires.
Next-gen EV traction inverters operate at 800V to enable faster charging. Our engineering team is focusing on developing silica-nanoparticle dispersed polymers that prevent insulation erosion from partial discharges (corona effect).
By replacing round magnet wires with rectangular flat profiles, winding designers can increase the slot-fill factor from 50% to over 75%. This improves torque output and thermal dissipation in electric drivetrains.
To support environmental sustainability, we are researching bio-derived polyurethane resins. Our objective is to lower the carbon footprint of enameled wire production while maintaining standard dielectric performance.
Insights, technical breakthroughs, and overseas shipments shaping our global customer partnerships.
Apr-23-2026
With the expansion of renewable energy and electric vehicles in 2026, finding cost-effective wire solutions is critical. Discover how our class 200/220 enameled aluminum wire helps optimize motor budgets.
Mar-24-2026
High copper prices have challenged global motor manufacturing. Our copper-clad aluminum enameled wire offers a viable alternative for voice coils, high-frequency signals, and lightweight induction designs.
Jun-02-2026
Daiming completed an export shipment of high-quality Continuously Transposed Conductors (CTC) to Turkey, helping support local power grid upgrades and high-voltage transformer installations.
Common questions from design engineers and procurement teams regarding enameled magnet wire.
There is no functional difference. "Paint coated magnet wire" and "enameled wire" are terms used interchangeably. They refer to a metal conductor (copper or aluminum) insulated with a thin, cured polymer film coating (or enamel varnish) rather than extruded plastic jackets.
Enameled aluminum wire is chosen when minimizing weight is a primary design goal or to reduce raw material costs. Aluminum is roughly 30% the weight of copper. It is commonly used in microwave oven transformers, domestic appliances, automotive alternators, and generator coils.
CTC is constructed by arranging multiple individual enameled flat wires into a transposed bundle. Transposition reduces eddy current losses caused by magnetic flux leakage in high-power transformers. It also improves mechanical strength and makes winding large coils easier.
The thermal class indicates the maximum temperature (in Celsius) that the insulation can withstand during continuous operation (for a service life rating of 20,000 hours). Class 180 (H) is standard for generic industrial motors, whereas Class 200 and 220 are used in high-power alternators, traction motors, and aerospace electronics.
CCA wire consists of an aluminum core clad within a high-purity copper outer sleeve. At high frequencies, electrical currents flow primarily along the outer surface of a conductor (known as the skin effect). Enameled CCA wire provides low electrical resistance at high frequencies while remaining lighter and more cost-effective than solid copper wire.
Complete range of enameled aluminum, copper, paper-covered, and transposed conductors. Click view details to check sizing tables.
