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Eureka Enameled Wire 0.516mm Diameter 180℃ High Temperature Resistant for Motors

Place of Origin Shanghai
Brand Name Huona
Certification ISO9001
Model Number CuNi40
Minimum Order Quantity 5kg
Price Negotiable
Packaging Details Carton/Wooden Case
Delivery Time 5-21 days
Payment Terms L/C,T/T,Western Union
Supply Ability 500 tons per month

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Product Details
Material Eureka (CuNi40) Bare Wire Diameter 0.516mm (±0.003mm)
Overall Diameter (w/insulation) ~0.58-0.60mm (depending On Coating Thickness) Insulation Class 180°C (Polyesterimide/PAI)
Resistivity (20°C) 0.49 μΩ·m Tensile Strength ≥550 MPa (Hard Drawn); ≥350 MPa (Annealed)
Elongation ≥15% (250mm Gauge Length) Operating Temperature Range -60°C To +180°C
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Eureka enameled wire 0.516mm diameter

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High temperature resistant motor wire

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180℃ resistant enameled wire

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Product Description
Eureka Enameled Wire (0.516mm, 180°C Class)
High-performance resistance wire composed of 60% copper and 40% nickel (CuNi40), engineered through vacuum smelting, precision drawing, and high-temperature enamel coating. This wire combines extremely stable electrical resistivity, low temperature coefficient of resistance (TCR), and excellent thermal stability up to 180°C.
Standard Designations & Core Material
  • 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 Performance Advantages
Ultra-Stable Electrical Performance
  • High & Stable Resistivity: 0.49 μΩ*m (20°C), significantly higher than pure copper for compact resistor designs
  • Ultra-Low TCR: ±40 ppm/°C (0-100°C), ensuring minimal resistance drift (≤0.004%/°C) under temperature fluctuations
Superior 180°C Thermal Endurance
  • Continuous High-Temperature Operation: Rated for continuous use at 180°C with short-term overload to 200°C
  • Thermal Shock Resistance: Maintains adhesion and dielectric strength after 10,000 hours of aging at 180°C
Optimized 0.516mm Mechanical Properties
  • Balanced Strength & Flexibility: Tensile strength ≥550 MPa with sufficient ductility for small mandrel winding
  • Excellent Solderability: Easy enamel stripping or direct soldering for high-speed automated assembly
Technical Specifications
Attribute Value (Typical)
Alloy Material Eureka (CuNi40)
Bare Wire Diameter 0.516mm (±0.003mm)
Overall Diameter (w/insulation) ~0.58-0.60mm
Insulation Class 180°C (Polyesterimide/PAI)
Resistivity (20°C) 0.49 μΩ*m
Temperature Coefficient of Resistance (0-100°C) ±40 ppm/°C
Tensile Strength ≥550 MPa (Hard Drawn); ≥350 MPa (Annealed)
Elongation ≥15% (250mm gauge length)
Breakdown Voltage ≥1500V (1min test)
Operating Temperature Range -60°C to +180°C
Product Specifications
Item Specification
Supply Form Spools (1kg/5kg/10kg per spool; spool diameter 200mm/300mm)
Insulation Color Natural (clear), red, or green (customizable)
Packaging Cardboard spools + vacuum-sealed bags + outer carton
Customization Diameter adjustment (0.02-3.0mm); insulation thickness variation
Typical Applications
  • Precision Resistors: High-precision wirewound resistors and potentiometers requiring stability
  • Current Shunts: High-current measurement shunts in battery management systems and power inverters
  • Automotive Electronics: Heating elements for seat warmers, defrosters, and engine sensors
  • Aerospace & Defense: Critical resistance components in avionics and radar systems