Polyester-imide /Polyamide-Imide Enameled Copper Round Wire (PEI/PAI, 200/240 °C)

Product Overview

QY polyamide-imide enameled wire is our top-tier speciality grade for the most demanding environments. The enamel film delivers an exceptional combination of mechanical strength, electrical performance, chemical resistance, radiation resistance and refrigerant resistance, allowing continuous operation where standard enamels would degrade rapidly.

Supplied from 0.040 to 0.50 mm in thermal classes 220 and 240, it is used in motors and appliances operating under high-temperature, extreme-cold, radiation-exposed or overload conditions, as well as in automotive and motorcycle ignition coils.

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.
• Exceptional thermal endurance up to Class 240.
• Resistance to chemicals, refrigerants, radiation and extreme cold.
• High resistance to soft breakdown under electrical overload.

Product Features

• Excellent mechanical, electrical and chemical properties.
• Superior resistance to soft breakdown and overload conditions.
• High mechanical strength for demanding winding processes.
• Withstands high temperature, extreme cold and radiation exposure.
• Outstanding refrigerant resistance for hermetic systems.
• Stable performance in chemically aggressive environments.

Typical Applications

• Motors and appliances under high-temperature, extreme-cold or overload conditions.
• Equipment exposed to radiation or aggressive chemicals.
• Automotive and motorcycle engine ignition coils.
• Sealed refrigeration and air-conditioning compressors.
• High-reliability industrial, defence and aerospace windings.

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.