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CuMn3 Manganin Copper Plate For High Precision for Current Shunts & Measuring Instruments
| 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 | L/C,T/T,Western Union,MoneyGram |
| Supply Ability | 500 tons per month |
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xProduct Details
| 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 |
| Highlight | CuMn3 Manganin copper plate,high precision current shunt plate,measuring instrument copper plate |
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Product 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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