PKW-2/240 PEEK Insulated Round Wire for High-Temperature & High-Voltage Applications
PKW-2/240 – PEEK Insulated Round Wire for High-Temperature & High-Voltage Applications
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Insulation: PEEK (Polyetheretherketone) | Thermal Class: 240°C | Profile: Round | Grade: Grade 2 |
PEEK (Polyetheretherketone) is a high-performance thermoplastic polymer recognized as one of the most advanced insulating materials available. PEEK round wire combines exceptional thermal stability, chemical resistance, and electrical insulation properties, making it suitable for applications in new energy vehicles, aerospace, industrial motors, and high-voltage systems.
CHINGCUNG offers PEEK insulated round wires with a continuous operating temperature rating of 240°C (up to 260°C intermittent). The insulation is applied via a single-layer extrusion process, delivering superior concentricity, higher partial discharge inception voltage (PDIV), and greater reliability compared to traditional multi-layer enameled wires.
1. Product Overview
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Model Number |
PKW-2/240 |
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Insulation Material |
Polyetheretherketone (PEEK) |
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Thermal Class |
240°C (continuous) / 260°C (intermittent) |
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Conductor Material |
Copper (oxygen-free, annealed) |
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Profile |
Round |
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Conductor Diameter Range |
0.65 – 4.20 mm |
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Insulation Grade |
Grade 2 (medium thickness) |
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Processing Method |
Single-layer extrusion (solvent-free) |
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Key Features |
High PDIV, excellent chemical resistance, low dielectric constant, flame retardant (UL94 V-0), radiation resistant |
2. Model Numbering System
CHINGCUNG PEEK insulated round wires are identified using the following model format:
PKW-Gx/240-D
PKW = PEEK Wire (Round) | Gx = Film Grade (G1–G4, with G4 being the thickest) | 240 = Thermal Class | D = Conductor Diameter (mm)
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Model Example |
Description |
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PKW-2/240-1.00 |
Grade 2 insulation, 240°C thermal class, 1.00mm conductor diameter |
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PKW-3/240-2.00 |
Grade 3 insulation, 240°C thermal class, 2.00mm conductor diameter |
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PKW-1/240-0.80 |
Grade 1 insulation (thinnest), 240°C thermal class, 0.80mm conductor diameter |
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PKW-4/240-3.00 |
Grade 4 insulation (thickest), 240°C thermal class, 3.00mm conductor diameter |
3. Product Size Range (Round Wire)
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Dimension |
Range |
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Conductor Diameter (D) |
0.65 mm – 4.20 mm |
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Insulation Thickness (Grade 1) |
30 – 60 μm |
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Insulation Thickness (Grade 2) |
60 – 90 μm |
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Insulation Thickness (Grade 3) |
90 – 120 μm |
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Insulation Thickness (Grade 4) |
120 – 150 μm |
Custom diameters and insulation thicknesses are available upon request.
4. Insulation Film Grades & Voltage Performance
PEEK round wires are available in four insulation thickness grades. Grade 1 is the thinnest; Grade 4 is the thickest. Higher grades provide increased dielectric strength and partial discharge inception voltage (PDIV) for demanding high-voltage applications.
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Grade |
Pre-side Insulation Thickness (μm) |
Breakdown Voltage (V) |
PDIV (Vp) |
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Grade 1 |
30 – 60 |
> 600 |
> 1200 |
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Grade 2 |
60 – 90 |
> 900 |
> 1400 |
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Grade 3 |
90 – 120 |
> 1200 |
> 1600 |
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Grade 4 |
120 – 150 |
> 1500 |
> 1800 |
Typical values. Actual performance may vary. PDIV values can reach above 2300Vp with optimized extrusion processes.
5. Performance Characteristics
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Thermal Class |
240°C (continuous), 260°C (intermittent) |
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Dielectric Constant (εr) at 25°C |
3.2 – 3.3 |
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Volume Resistivity at 23°C |
> 6 × 10¹³ Ω·m |
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Volume Resistivity at 140°C |
> 8 × 10¹² Ω·m |
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Volume Resistivity at 200°C |
> 6 × 10⁹ Ω·m |
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Surface Resistivity (25°C, 50% RH) |
2.0 × 10¹⁶ Ω |
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Radiation Resistance |
> 1100 Mrad (γ-ray) |
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Chemical Resistance |
Excellent (ATF oil, lubricants, impregnating varnish, epoxy) |
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Flexibility |
Excellent – withstands repeated bending without cracking |
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Environmental Compliance |
RoHS compliant (halogen-free) |
6. Key Advantages of PEEK Insulation
· High-temperature performance – Continuous operation up to 260°C, with a melting point of ~343°C.
· Excellent abrasion resistance – Suitable for dynamic applications and repeated bending.
· Superior chemical resistance – Resistant to ATF oil, lubricants, impregnating paints, and epoxy resins.
· High PDIV and dielectric strength – Enables reliable operation in high-voltage systems.
· Low dielectric constant – εr ~3.2, reduces capacitive coupling and improves power density.
· Flame retardant and self-extinguishing – UL94 V-0 rated, low smoke emission.
· Radiation resistance – Stable insulation properties even at high γ-ray doses.
· Environmentally friendly – Halogen-free and RoHS compliant; single-layer extrusion process uses up to 5× less energy than traditional enamel coating.
7. Typical Applications
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Application |
Description |
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Electric Vehicles |
Traction motors for high-voltage platforms; round winding wires for stators |
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Aerospace |
Actuators, sensors, and cables requiring high reliability, low weight, and radiation resistance |
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Industrial Motors |
High-speed spindles, servo motors, and variable frequency drive motors |
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Rail Transit |
Traction motors and auxiliary systems |
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Oil & Gas |
Downhole motors and sensors operating in high-temperature, corrosive environments |
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Medical Equipment |
MRI coils and diagnostic instruments requiring biocompatibility and high performance |
8. Quality Standards
· Thermal Class: 240°C (IEC 60172)
· Flammability Rating: UL94 V-0
· Environmental Compliance: RoHS, REACH
· Quality System: Manufactured in ISO 9001 certified facilities
All products are tested for dielectric strength, adhesion, flexibility, and thermal performance before shipment.
9. Why Choose CHINGCUNG?
· Material expertise – Over 10 years of experience in high-performance insulated wire manufacturing
· Flexible production – Custom diameters, thickness grades, and packaging options
· Quality assurance – Strict process control and 100% testing on key parameters
· Competitive pricing – Efficient single-layer extrusion process reduces production costs
· Global supply – Serving customers in North America, Europe, and Asia
10. Ordering Information
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Model Format |
PKW-Gx/240-D (example: PKW-2/240-1.00) |
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Minimum Order Quantity |
Sample orders accepted |
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Lead Time |
2–4 weeks depending on quantity and specifications |
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Packaging |
Spools or coils, customized to customer requirements |
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Tel: +86-13621982708 | www.evmagnetwire.com
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