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

Price Negotiable

Price: Negotiable

MOQ: 5kg

Delivery Time: 5-21 days

Brand: Huona

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