Product Description

Eureka Enameled Wire (0.516mm, 180°C Class)

Product Overview

Standard Designations & Core Material Foundation

• Alloy Grade: Eureka (CuNi40; equivalent to UNS C18400, DIN 2.0872)
• Key Specification: 0.516mm bare diameter (tolerance: ±0.003mm)
• Insulation Class: 180°C (Polyesterimide or Polyamide-imide enamel coating)
• Chemical Composition: Cu: 59-61%; Ni: 39-41%; trace impurities ≤0.5%
• Compliant Standards: IEC 60317, NEMA MW 1000, GB/T 6109
• Manufacturer: Huona New Material, certified to ISO 9001 and IATF 16949

Key Core Advantages (Centered on 0.516mm & 180°C Performance)

1. Ultra-Stable Electrical Performance

• High & Stable Resistivity: Exhibits a resistivity of 0.49 μΩ·m (20°C), which is significantly higher than pure copper, allowing for compact resistor designs.
• Ultra-Low TCR: The temperature coefficient of resistance is as low as ±40 ppm/°C (0-100°C), ensuring minimal resistance drift (≤0.004%/°C) even under fluctuating temperatures. This stability is critical for precision current sensing and voltage regulation.

2. Superior 180°C Thermal Endurance

• Continuous High-Temperature Operation: The enamel insulation is rated for continuous use at 180°C, with a short-term overload capability up to 200°C.
• Thermal Shock Resistance: The enamel coating maintains adhesion and dielectric strength even after 10,000 hours of aging at 180°C, far exceeding the performance of standard 155°C class wires.

3. Optimized 0.516mm Mechanical & Process Properties

• Balanced Strength & Flexibility: The 0.516mm diameter provides a tensile strength of ≥550 MPa (hard drawn) while maintaining sufficient ductility for winding on small mandrels (minimum bending radius ≥2× diameter).
• Excellent Solderability: The enamel layer is designed for easy stripping or direct soldering (depending on coating type), facilitating high-speed automated assembly in resistor manufacturing.

Technical Specifications

Product Specifications

Typical Application Scenarios

• Precision Resistors: Used in high-precision wirewound resistors and potentiometers where stability is paramount.
• Current Shunts: Ideal for high-current measurement shunts in battery management systems (BMS) and power inverters.
• Automotive Electronics: Heating elements for seat warmers, defrosters, and engine sensors due to its corrosion resistance and thermal stability.
• Aerospace & Defense: Critical resistance components in avionics and radar systems requiring reliability under extreme conditions.

Huona (Shanghai) New Material Co., Ltd. Was established in 2008, currently have three divisions: Magnesium Division, Thermal Spray Division and Functional Material Division.

Magnesium Division produces magnesium metal products. Various models of high-quality magnesium alloy plate, magnesium rods, high-purity magnesium, magnesium plate, magnesium die casting, magnesium extrusion profiles and other metal magnesium and deep processing products.

Thermal spray wire Division offers a wide variety of pure metal and metal alloy wires, including nickel-, iron-, aluminum-, and zinc-based wires for thermal spray projects.

Fuctional Material Division supply electronic packaging COMPONENTS(GTMS, CTMS), soft magnetic alloys and bimetal strip.

Our company is certified by ISO9001 quality system and ISO14001 environmental protection system.

Mission Statement

We try our best to understand and utilize information within the environment. With this competency, we assist customers to create added value and contribute to the development of industry and healthy living.

We strive for "Best, " welcome challenges, and are relentless till we deliver products and solutions.