Enameled Copper Round Wire (130/155/180 °C)

Product Overview

The self-bonding enameled copper round wire combines a polyurethane base enamel with an integral self-bonding overcoat. After winding, the outer bonding layer is activated by heat, solvent or alcohol, fusing the turns into a rigid self-supporting coil. This removes the need for bobbins, tie cords or varnish impregnation, simplifying assembly and improving consistency in high-volume production.

With a diameter range of 0.040 to 0.80 mm and thermal classes of 130, 155 and 180 °C, the wire is widely used in miniature and precision coil applications where coil geometry must remain stable throughout the life of the product.

Key Advantages

• Dual manufacturing hubs in Changzhou and Foshan, China, covering both fine-gauge and heavy-gauge production.
• Full production range from 0.04 mm to 2.50 mm, supporting everything from micro-motors to large power equipment.
• Monthly output of approximately 3,000 tons, with stable capacity for repeat and high-volume programmes.
• ISO 9001 and ISO 14001 certified quality and environmental management systems.
• RoHS and REACH compliant insulation systems for European and North American markets.
• Wire manufactured in accordance with IEC, NEMA, GB and JIS international standards.
• Self-bonding overcoat eliminates varnish impregnation and reduces process steps.
• Stable coil geometry improves electrical consistency and reduces assembly scrap.
• Direct solderability supports high-speed automated winding and termination.

Product Features

• Excellent thermal shock resistance and high mechanical strength.
• Capable of continuous operation at temperatures up to the rated thermal class.
• Direct solderability without prior stripping of the enamel film.
• Uniform enamel thickness and tight conductor diameter tolerance.
• Available in polyester, solderable, high-temperature, refrigerant-resistant, self-lubricating and flame-retardant bonding variants.
• Smooth, abrasion-resistant surface for high-speed automatic winding.

Typical Applications

• Deflection coils for display and picture tubes.
• Special-shaped coils for servo and stepper motors.
• Micro-motor coils and miniature actuators.
• Voice coils, relay coils and sensor windings.
• Frameless and self-supporting coils that must hold their shape without a former.

Packing & Delivery

Quality Assurance & Certifications

• Quality management system certified to ISO 9001; environmental management certified to ISO 14001.
• Insulation systems compliant with RoHS and REACH directives for EU and North American supply chains.
• Routine electrical and dimensional testing on every production batch before release.
• Traceability maintained from raw conductor lot through to finished spool.
• Products manufactured to IEC, NEMA, GB and JIS dimensional and performance standards.

Enamel Type Reference

The enamel designations below are the international equivalents of the Chinese GB codes. All five enamel systems are available on copper, aluminium and copper-clad aluminium conductors, and can be combined with the insulation grades and thermal classes shown on this page.

FAQ

Request a Quotation

Need Pricing or a Technical Datasheet?

Send us your conductor size, thermal class and quantity requirement. Our engineers will confirm the correct grade and enamel build, and issue a formal quotation within one working day.