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| Categories | Aromatic Polyimide Enameled Wire |
|---|---|
| MOQ: | 500 Kgs |
| Delivery Time: | 2-3 weeks |
| Electrical Resistivity at 20°C: | 49 µΩ·cm (approx. 0.49 µΩ·m) |
| Packaging Details: | PT-10/PT-25 spools, Cartons, Wooden Boxes |
| Price: | 25.00-50.00 USD/Kg |
| Heat Shock Resistance: | 260°C (IEC 60317 compliant) |
| Dielectric Strength: | Significantly enhanced by Grade 3 film thickness |
| Model Number: | QYKT-3/240 |
| Temperature Coefficient of Resistance (TCR): | ≤ ±40 ppm/°C (0–100°C range) |
| Payment Terms: | T/T |
| Cut‑through Temperature: | ≥ 450°C |
| Composition: | Cu 55% / Ni 45% (nominal) |
| Supply Ability: | 5 tons/month |
| Thermal Class: | 240°C (continuous) |
| Thermoelectromotive Force vs. Copper: | -43 µV/°C (0–100°C) |
| Certification: | RoHS |
| Place of Origin: | Jiangsu |
| Magnetic Property: | Non-magnetic (austenitic structure) |
| Brand Name: | CHINGCUNG |
| Density: | 8.89 – 8.9 g/cm³ |
| Company Info. |
| Shanghai Husu M&E Technology Co., Ltd |
| Verified Supplier |
| View Contact Details |
| Product List |
Aromatic Polyimide Enameled Constantan Round Wire – Grade 3 Thick Film
Constantan wire – a copper‑nickel resistance alloy – is widely recognized for its low temperature coefficient of resistance, excellent solderability, and stable performance across a wide temperature range (up to 480°C). When insulated with aromatic polyimide and finished with a thick Grade 3 film, this material becomes a high‑reliability solution for precision temperature sensing and industrial electronics. CHINGCUNG now offers aromatic polyimide enameled constantan round wire with Grade 3 thick‑film insulation, specifically developed for T‑type thermocouples and other demanding instrumentation applications. A stainless steel braided shielded version is also available for enhanced mechanical protection. 1. Product Overview
Key Feature: Grade 3 thick polyimide insulation significantly improves dielectric strength and breakdown voltage compared to standard thin‑film alternatives. 2. Technical Challenge & BreakthroughThe naturally high surface smoothness of constantan wire makes it difficult for polyimide varnish to adhere uniformly. Through repeated trials and formulation adjustments, our R&D team successfully solved this adhesion challenge and achieved a Grade 3 thick polyimide coating with consistent film thickness and excellent adhesion strength. This breakthrough ensures: · Reliable insulation performance under thermal cycling · High dielectric strength for precision measurement circuits · Durable coating that resists peeling or cracking during winding 3. Specification Table
Custom dimensions are available upon request. 4. Performance Characteristics
5. Applications
6. Quality StandardsAll CHINGCUNG constantan enameled wires are manufactured in ISO 9001 certified facilities and comply with the following international standards: · IEC 60317‑7: 1997 – Enamelled round copper wire, Class 220 · IEC 60317‑46: 1997 – Enamelled round copper wire, Class 240 · GB/T 6109.6‑2008 – Enamelled round winding wires, Class 220 · GB/T 6109.22‑2008 – Enamelled round winding wires, Class 240 RoHS compliant – free from restricted hazardous substances. 7. Available Options
8. Why Choose CHINGCUNG?· Proven R&D capability – Over 10 years of experience in polyimide enameled wire manufacturing · Process control – Strict quality management from raw material to finished coil · Flexible production – Small sample orders to bulk production (100+ tons monthly capacity) · Traceability – Full documentation including test reports and material certificates · Global service – Reliable logistics to North America, Europe, and Asia 9. Ordering Information
Need a sample or technical datasheet? Contact our team for free samples, detailed specifications, or engineering consultation. Request a Sample View Products Tel: +86-13621982708 | Web: www.evmagnetwire.com |
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