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CuMn3 Manganin Copper Plate For High Precision for Current Shunts & Measuring Instruments
CuMn3 Manganin Copper Plate For High Precision for Current Shunts & Measuring Instruments
Specifications
Brand Name :
Huona
Model Number :
CuMn3
Certification :
ISO9001
Place of Origin :
Shanghai
MOQ :
5kg
Price :
Negotiable
Payment Terms :
L/C,T/T,Western Union,
Supply Ability :
500 tons per month
Delivery Time :
5-21 days
Packaging Details :
Carton/Wooden Case
Grade :
CuMn3
Thickness Range :
0.1–50mm
Width Range :
10–600mm
Length Range :
1000–6000mm (customizable)
Resistivity (20℃) :
0.13 μΩ·m
Temperature Coefficient of Resistance (0–100℃) :
±5×10⁻⁶/℃
Tensile Strength :
Tensile Strength
Density (25℃) :
8.90 g/cm³
Description
CuMn3 Manganin Copper Plate for High Precision Current Shunts & Measuring Instruments
CuMn3 manganin copper plate from Huona New Material is a high-performance copper-manganese alloy plate composed of copper base metal with 2.5-3.5% manganese and trace stabilizing elements. Manufactured through vacuum smelting, hot rolling, cold rolling, and precision annealing processes, it delivers ultra-low temperature coefficient of resistance, stable resistivity, and excellent corrosion resistance.
Standard Designations & Material Foundation
  • Alloy Grade: CuMn3 (equivalent to UNS C18700, DIN 2.0842, GB/T 2040-2017)
  • Chemical Composition (wt%): Mn: 2.5-3.5%; Cu: balance; Fe ≤0.3%; Pb ≤0.05%; C ≤0.1%
  • Compliant Standards: ASTM B124, EN 13602, GB/T 2040-2017, RoHS 2.0
  • Manufacturer: Huona New Material, certified to ISO 9001 and ISO 14001
Key Performance Advantages
Superior Electrical Stability
Ultra-low temperature coefficient of resistance (±5×10⁻⁶/℃ from 0-100℃) ensures resistance value drift ≤0.005% within working temperature range, making it ideal for high-precision electronic components.
Excellent Mechanical Processability
High ductility with elongation ≥35% and bending radius ≤1× thickness enables complex component shaping through stamping, deep drawing, and etching processes.
Corrosion Resistance & Environmental Adaptability
Forms a dense oxide film that passes 500-hour ASTM B117 salt spray testing and operates stably from -40℃ to 120℃.
Technical Specifications
Attribute Value (Typical)
Alloy Grade CuMn3 (annealed temper, M)
Thickness Range 0.1-50mm (tolerance: ±0.005mm for ≤1mm; ±0.01mm for >1mm)
Width Range 10-600mm (tolerance: ±0.1mm)
Length Range 1000-6000mm (customizable)
Resistivity (20℃) 0.13 μΩ*m
Temperature Coefficient of Resistance (0-100℃) ±5×10⁻⁶/℃
Tensile Strength ≥280 MPa (annealed)
Yield Strength ≥100 MPa (annealed)
Elongation ≥35%
Hardness (HB) 60-80 (annealed)
Density (25℃) 8.90 g/cm³
Surface Finish Mill finish (Ra ≤1.2μm); optional polished (Ra ≤0.2μm)
Product Specifications
Item Specification
Supply Form Plates (1-6m length); cut-to-length (≥100mm)
Surface Treatment Mill finish, pickled, or electroplated (tin/nickel plating)
Processability Compatible with stamping, etching, laser cutting, and spot welding
Packaging PE film wrapping + foam interlayer + wooden crate
Customization Special thicknesses (0.05-60mm); customized heat treatment
Typical Applications
  • Precision Instrumentation: Core material for precision resistors, current shunts, and Wheatstone bridge components
  • Electronic Components: Strain gauge blanks and resistance grids for industrial frequency converters
  • Industrial Control Systems: Precision resistance elements for temperature compensation circuits
  • Medical Devices: Resistor components for portable diagnostic equipment
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CuMn3 Manganin Copper Plate For High Precision for Current Shunts & Measuring Instruments

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Product Detail
Brand Name :
Huona
Model Number :
CuMn3
Certification :
ISO9001
Place of Origin :
Shanghai
MOQ :
5kg
Price :
Negotiable
Contact Supplier
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CuMn3 Manganin Copper Plate For High Precision for Current Shunts & Measuring Instruments

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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