Jun 17 , 2025
Polyamide over coated with Polyester-imide Round Magnet Copper wire is a high-performance electromagnetic wire product, with an insulation layer composed of a composite of Polyesterimide (PEI) and Polyamide-imide (PAI). The composite coating significantly enhances the long-term stability and reliability of the polyimide magnet wire in complex working environments and ensures electrical insulation performance and mechanical strength at higher temperatures.
| Type | Polyester | Modified Polyester | Polyurethane | Polyesterimide | Polyamide-imide | Polyamide |
| Code | PEW, QZ | PEW, QZ | UEW, QA | EIW, QZY | EI/AIW, QZY/XY | AIW, QXY |
| Thermal Class | Class B, 130°C | Class F, 155°C | Class F, 155°C | Class H, 180°C | Class H, 200°C | Class L, 220°C |
| Insulation thickness | Grade 1, 2, 3 | |||||
| Standard | IEC 60317, NEMA MW, JIS | |||||
| Characteristics | Good heat resistance and mechanical strength. LOW cost. | High mechanical strength, good elasticity, scratch resistance, adhesion, electrical properties and solvent resistance | Solderability (no need to remove the insulation). High frequency resistance and dyeability | Good thermal shock resistance and refrigerant resistance. Excellent chemical resistance, abrasion resistance | More comprehensive performance, with high heat resistance, mechanical properties, refrigerant resistance and chemical resistance | Highest heat class High heat resistance, good solvent and refrigerant resistance |
Rongda Wire's Class 200 enameled copper wire is engineered to excel in the most demanding electrical applications. Featuring a composite insulation of Polyester-Imide with a Polyamide-Imide overcoat, this premium polyimide magnet wire is designed for superior performance. The design of this enameled copper wire aims to meet the stringent requirements of high-end electrical equipment in terms of heat resistance, electrical insulation, and mechanical strength.
Superior Thermal Resistance (Class 200): The advanced composite insulation allows this polyimide magnet wire to perform reliably in continuous operating temperatures up to 200°C.
Excellent Electrical Insulation Performance: The dual-layer coating of our polyimide magnet wire provides a high dielectric strength and excellent insulation resistance, effectively preventing short circuits even under high voltage stress.
High Mechanical Strength and Abrasion Resistance: This round magnet wire is exceptionally tough. Its smooth, durable surface resists scuffs, stretching, and abrasion during high-speed automated winding processes, minimizing production faults and ensuring a uniform coil.
Outstanding Chemical Stability and Solvent Resistance: Engineered for harsh environments, our polyimide magnet wire exhibits excellent resistance to a wide range of chemicals, transformer oils, and common solvents.
Excellent Moisture Resistance: The non-porous polyamide-imide overcoat provides a formidable barrier against moisture and humidity.
The Rongda polyimide magnet wire is the premier choice for applications demanding the highest levels of performance. As a leading manufacturer, we ensure every spool of our polyimide magnet wire meets rigorous quality standards. Contact Rongda Wire today to request a quote or discuss how our advanced magnet wire solutions can enhance your products.
