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CuNi44 Flat Wire (ASTM C71500/DIN CuNi44) Nickel-Copper Alloy for Electrical Components

Place of Origin Shanghai
Nama merek Huona
Sertifikasi ISO9001
Model Number CuNi44
Minimum Order Quantity 10kg
Harga Bisa dinegosiasikan
Packaging Details Carton/Wooden Case
Delivery Time 5-21 days
Payment Terms L/C,T/T,Western Union,MoneyGram
Supply Ability 500 tons per year

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Detail produk
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)​
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CuNi44 flat wire for electrical components

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Nickel-copper alloy flat wire ASTM C71500

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DIN CuNi44 flat wire with warranty

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Deskripsi Produk
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.