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CuNi44 Flat Wire (ASTM C71500/DIN CuNi44) Nickel-Copper Alloy for Electrical Components
CuNi44 Flat Wire (ASTM C71500/DIN CuNi44) Nickel-Copper Alloy for Electrical Components
Specifications
Brand Name :
Huona
Model Number :
CuNi44
Certification :
ISO9001
Place of Origin :
Shanghai
MOQ :
10kg
Price :
Negotiable
Payment Terms :
L/C,T/T,Western Union,
Supply Ability :
500 tons per year
Delivery Time :
5-21 days
Packaging Details :
Carton/Wooden Case
Product Name :
CuNi44 flat wire
Thickness Range​ :
0.05mm – 0.5mm​
Width Range​ :
0.2mm – 10mm​
Tensile Strength​ :
450 – 550 MPa (annealed)​
Elongation​ :
≥20% (annealed)​
Hardness (HV)​ :
130 – 170 (annealed); 210 – 260 (half-hard)​
Chemical Composition (Typical, %)​ :
Ni:43-45%
Surface Finish​ :
Bright annealed (Ra ≤0.2μm)​
Description
CuNi44 Flat Wire (ASTM C71500/DIN CuNi44) Nickel-Copper Alloy for Electrical Components
Product Overview
CuNi44 flat wire stands out for its exceptional electrical resistance stability and mechanical workability, making it a superior choice for precision electrical components.
Key Attributes
Product Name CuNi44 flat wire
Thickness Range 0.05mm – 0.5mm
Width Range 0.2mm – 10mm
Tensile Strength 450 – 550 MPa (annealed)
Elongation ≥20% (annealed)
Hardness (HV) 130 – 170 (annealed); 210 – 260 (half-hard)
Chemical Composition (Typical, %) Ni:43-45%
Surface Finish Bright annealed (Ra ≤0.2μm)
Product Advantages
Compared to similar copper-nickel alloys like CuNi10 (Constantan) and CuNi30, CuNi44 offers:
  • Higher resistivity (49 μΩ*cm vs. 45 μΩ*cm for CuNi30)
  • Lower temperature coefficient of resistance (TCR)
  • Superior resistance stability in temperature-fluctuating environments
  • Enhanced heat dissipation and contact uniformity with flat cross-section design
Standard Designations
  • Alloy Grade: CuNi44 (Copper-Nickel 44)
  • UNS Number: C71500
  • DIN Standard: DIN 17664
  • ASTM Standard: ASTM B122
Technical Specifications
Thickness Tolerance ±0.001mm (≤0.1mm); ±0.002mm (>0.1mm)
Width Tolerance ±0.02mm
Aspect Ratio (Width:Thickness) 2:1 - 20:1 (custom ratios available)
Chemical Composition
Nickel (Ni) 43.0 - 45.0%
Copper (Cu) Balance (55.0 - 57.0%)
Iron (Fe) ≤0.5%
Manganese (Mn) ≤1.0%
Silicon (Si) ≤0.1%
Carbon (C) ≤0.05%
Product Specifications
Supply Form Continuous rolls (50m - 300m) or cut lengths
Packaging Vacuum-sealed with anti-oxidation paper; plastic spools
Processing Options Custom slitting, annealing, or insulation coating
Compliance RoHS, REACH certified; material test reports available
Typical Applications
  • Precision wirewound resistors and current shunts
  • Strain gauge grids and load cells
  • Heating elements in medical devices
  • EMI shielding in high-frequency circuits
  • Electrical contacts in automotive sensors
We provide tailored solutions for specific dimensional requirements. Free samples (1m lengths) and comparative performance data with CuNi30/CuNi10 are available upon request.
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CuNi44 Flat Wire (ASTM C71500/DIN CuNi44) Nickel-Copper Alloy for Electrical Components

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Product Detail
Brand Name :
Huona
Model Number :
CuNi44
Certification :
ISO9001
Place of Origin :
Shanghai
MOQ :
10kg
Price :
Negotiable
Contact Supplier
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CuNi44 Flat Wire (ASTM C71500/DIN CuNi44) Nickel-Copper Alloy for Electrical Components

Huona (Shanghai) New Material Co., Ltd.

Verified Supplier
2 Years
shanghai, shanghai
Since 2008
Business Type :
Manufacturer, Exporter
Main Products :
Low Expansion Alloy, Soft Magnetic Alloy, Elastic Alloy
Total Annual :
8000000-100000000
Employee Number :
100~120
Certification Level :
Verified Supplier
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