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CuMn3 Manganin Copper Plate 1.0mm×300mm×1000mm High Conductivity Alloy Plate

Place of Origin Shanghai
Brand Name Huona
Certification ISO9001
Model Number CuMn3
Minimum Order Quantity 5kg
Price Negotiable
Packaging Details Carton/Wooden Case
Delivery Time 5-21 days
Payment Terms T/T,Western Union
Supply Ability 500 tons per month

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Product Details
Alloy Grade CuMn3 (annealed Temper, M) Dimensions 1.0×300×1000mm (customizable)
1.0×300×1000mm (customizable) 0.18 μΩ·m TCR (0–100℃) ±5×10⁻⁶/℃
Tensile Strength ≥280 MPa (annealed) Elongation ≥35%
Hardness (HB) 60–80 Density 8.90 G/cm³
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Product Description
CuMn3 Manganin Copper Plate (1.0×300×1000mm)
CuMn3 manganin copper plate from Huona New Material is a high-precision copper-manganese alloy plate featuring a bright, smooth surface finish. Manufactured through vacuum smelting, hot/cold rolling, precision annealing, and surface polishing processes, this alloy delivers ultra-low temperature coefficient of resistance, stable resistivity, and excellent formability for precision electrical applications.
Material Specifications & Standards
Alloy Grade: CuMn3 (equivalent to UNS C18700, DIN 2.0842, GB/T 2040-2017)
Dimensions: 1.0mm × 300mm × 1000mm (Thickness tolerance: ±0.02mm, Width tolerance: ±0.3mm, Length tolerance: ±2mm)
Compliant Standards: ASTM B124, EN 13602, GB/T 2040-2017, RoHS 2.0
Manufacturer: Huona New Material (ISO 9001 & ISO 14001 Certified)
Chemical Composition
Manganese (Mn): 2.5-3.5% | Copper (Cu): Balance | Iron (Fe): ≤0.3% | Lead (Pb): ≤0.05% | Carbon (C): ≤0.1%
Key Performance Advantages
Ultra-Stable Electrical Performance
  • Low Temperature Coefficient of Resistance: TCR = ±5×10⁻⁶/℃ (0-100℃)
  • Stable Resistivity: 0.18 μΩ*m at 20℃ with resistance drift ≤0.005%/℃
  • Bright Surface Finish: Ra ≤0.2μm reduces contact resistance and enhances solderability
Excellent Mechanical & Processing Properties
  • High Ductility: Elongation ≥35% (annealed condition)
  • Superior Formability: Bending radius ≤1× thickness (180° bend without cracking)
  • Precision Dimensional Control: Flatness ≤0.1mm/m, thickness uniformity ±0.02mm
Corrosion & Environmental Resistance
  • Atmospheric & Mild Corrosion Resistance: Passes 500-hour ASTM B117 salt spray test
  • Wide Operating Temperature Range: -40℃ to 120℃ for stable performance
Technical Specifications
Attribute Value (Typical)
Alloy Grade CuMn3 (annealed temper, M)
Dimensions 1.0×300×1000mm (customizable)
Resistivity (20℃) 0.18 μΩ*m
TCR (0-100℃) ±5×10⁻⁶/℃
Tensile Strength ≥280 MPa (annealed)
Elongation ≥35%
Hardness (HB) 60-80
Density 8.90 g/cm³
Surface Finish Bright polished (Ra ≤0.2μm)
Operating Temperature -40℃ to 120℃
Product Specifications
Item Specification
Supply Form Single plate / stack (10-50 plates per stack)
Surface Treatment Bright polished, pickled, or electro-tinned (optional)
Processability Stamping, etching, laser cutting, CNC machining, spot welding
Packaging PE film + foam interlayer + wooden crate (anti-scratch & deformation)
Customization Thickness (0.5-20mm); width (100-1000mm); length (500-3000mm); hardness adjustment
Typical Applications
Precision Instrumentation
Precision resistors, current shunts, Wheatstone bridges for multimeters & power analyzers
Electronic Components
Strain gauge blanks, resistance grids for frequency converters, temperature compensation circuits
Industrial Control
Signal conditioning modules, PLC precision resistance elements
Medical & Automotive
Portable diagnostic equipment resistors, automotive sensor shunts