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Ultra - Thin In - Stock CuNi44 Foil 0.0125mm Thick x 102mm Wide High Precision & Corrosion Resistance
Ultra - Thin In - Stock CuNi44 Foil 0.0125mm Thick x 102mm Wide High Precision & Corrosion Resistance
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,MoneyGram
Supply Ability :
500 tons per month
Delivery Time :
5-21 days
Packaging Details :
Carton/Wooden Case
Density :
8.9 g/cm³
Melting point :
1230-1290 ℃
Electrical conductivity :
2m/Ω mm²/m (at 20 °C R330)
Electrical resistivity :
0.49 Ωmm²/m (at 20 °C R330)
Temperature coefficient of electrical resistance :
-80 to +40·10-6/K (at 20 to 105 °C R330)
Thermal conductivity :
23 W/K m (at 20 °C)
Thermal capacity :
0.41 J/g K (at 20 °C)
Coefficient of thermal expansion (linear) :
14.5·10-6/K (at 20 to 300 °C)
Description

Product Description

CuNi44 Foil (0.0125mm Thickness × 102mm Width)

Product Overview

CuNi44 foil (0.0125mm × 102mm), this copper-nickel resistance alloy, also known as constantan, is characterized by a high electrical resistance
coupled with a fairly small temperature coefficient of the resistance. This alloy also shows high tensile strength
and resistance towards corrosion. It can be used at temperatures of up to 600°C in air.

Standard Designations

  • Alloy Grade: CuNi44 (Copper-Nickel 44)
  • UNS Number: C71500
  • International Standards: Complies with DIN 17664, ASTM B122, and GB/T 2059
  • Dimensional Specification: 0.0125mm thickness × 102mm width
  • Manufacturer: Huona New Material, certified to ISO 9001 for precision alloy processing

Key Advantages (vs. Standard CuNi44 Foils)

This 0.0125mm × 102mm CuNi44 foil stands out for its targeted ultra-thin and fixed-width design:


  • Ultra-Thin Precision: 0.0125mm thickness (equivalent to 12.5μm) achieves industry-leading thinness, enabling miniaturization of electronic componentswithout sacrificing mechanical strength.
  • Stable Resistance Performance: Resistivity of 49 ± 2 μΩ·cm at 20°C and low temperature coefficient of resistance (TCR: ±40 ppm/°C, -50°C to 150°C)—ensures minimal resistance drift in high-precision measurement scenarios, outperforming thinner non-alloy foils.
  • Strict Dimensional Control: Thickness tolerance of ±0.0005mm and width tolerance of ±0.1mm (102mm fixed width) eliminate material waste in automated production lines, reducing post-processing costs for customers.
  • Excellent Formability: High ductility (elongation ≥25% in annealed state) allows for complex micro-stamping and etching (e.g., fine resistor grids) without cracking—critical for precision electronic manufacturing.
  • Corrosion Resistance: Passes 500-hour ASTM B117 salt spray testing with minimal oxidation, ensuring long-term reliability in humid or mild chemical environments.

Technical Specifications

Attribute Value
Chemical Composition (wt%) Ni: 43 - 45 % Cu: balance Mn: ≤1.2 %
Thickness 0.0125mm (tolerance: ±0.0005mm)
Width 102mm (tolerance: ±0.1mm)
Temper Annealed (soft, for easy processing)
Tensile Strength 450-500 MPa
Elongation (25°C) ≥25%
Hardness (HV) 120-140
Resistivity (20°C) 49 ± 2 μΩ·cm
Surface Roughness (Ra) ≤0.1μm (bright annealed finish)
Operating Temperature Range -50°C to 300°C (continuous use)

Product Specifications

Item Specification
Surface Finish Bright annealed (oxide-free, no oil residues)
Supply Form Continuous rolls (length: 50m-300m, on 150mm plastic spools)
Flatness ≤0.03mm/m (critical for uniform etching)
Etchability Compatible with standard acid etching processes (e.g., ferric chloride solutions)
Packaging Vacuum-sealed in anti-oxidation aluminum foil bags with desiccants; outer carton with shock-absorbing foam
Customization Optional anti-tarnish coating; cut-to-length sheets (minimum 1m); adjusted roll lengths for automated lines

Typical Applications

  • Micro-Electronics: Thin-film resistors, current shunts, and potentiometer elements in wearable devices, smartphones, and IoT sensors (0.0125mm thickness enables compact PCB design).
  • Strain Gauges: High-precision strain gauge grids (102mm width fits standard gauge manufacturing panels) for load cells and structural stress monitoring.
  • Medical Devices: Miniature heating elements and sensor components in implantable devices and portable diagnostic tools (corrosion resistance ensures biocompatibility with body fluids).
  • Aerospace Instrumentation: Precision resistance components in avionics (stable performance under temperature fluctuations at high altitudes).
  • Flexible Electronics: Conductive layers in flexible PCBs and foldable displays (ductility supports repeated bending).


Huona New Material implements rigorous quality control for this ultra-thin CuNi44 foil: each batch undergoes thickness measurement (via laser micrometer), chemical composition analysis (XRF), and resistance stability testing. Free samples (100mm × 102mm) and detailed material test reports (MTR) are available upon request. Our technical team provides tailored support—including etching parameter recommendations and anti-oxidation storage guidelines—to help customers maximize the performance of this precision foil in micro-manufacturing scenarios.
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Ultra - Thin In - Stock CuNi44 Foil 0.0125mm Thick x 102mm Wide High Precision & Corrosion Resistance

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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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Ultra - Thin In - Stock CuNi44 Foil 0.0125mm Thick x 102mm Wide High Precision & Corrosion Resistance

Huona (Shanghai) New Material Co., Ltd.

Verified Supplier
1 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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