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Copper Bar
Available Configurations
Properties common to all products in this list
| Cross-Section | Length | Other Variants |
|---|---|---|
| 8mm x 52mm | 25mm to 1000mm | Oxygen-Free High Conductivity |
Need custom configurations? Please contact us.
Key Features
Copper Bar at 99.995% purity (4N5) is a high-purity rectangular-section copper stock delivering electrical resistivity of 1.69 µΩ·cm, thermal conductivity of 401 W/m·K, and conductivity at 101% IACS in a flat-sided format optimised for milling, sawing, and grinding into finished components:
99.995% Purity (4N5) for Trace Impurity-Sensitive Applications
The purity step from standard copper to 4N5 is meaningful wherever trace metallic impurities would compromise surface chemistry, electrochemical consistency, bonding quality, or the integrity of sensitive processes — making this grade the natural choice for precision laboratory apparatus, high-performance busbar fabrication, and research hardware where the bar itself is a functional material rather than a structural commodity.
Maximum Electrical & Thermal Performance (101% IACS, 401 W/m·K)
Delivering electrical resistivity of 1.69 µΩ·cm, thermal conductivity of 401 W/m·K, and conductivity at 101% IACS, Copper Bar at 4N5 purity provides the benchmark conductor performance of copper in a rectangular section suited to thermal blocks, cold plates, busbar sections, and electrode blanks.
Rectangular Section for Efficient Machining & Material Use
The rectangular section provides flat reference surfaces, efficient material utilisation, and predictable cross-sectional properties across the full bar length — making 4N5 Copper Bar the natural starting point for milled, sawn, and ground components where dimensional accuracy and consistent material properties in the finished part are both required.
Good Machinability & Ductility
The face-centred cubic structure gives good machinability and ductility in the annealed condition, making 4N5 Copper Bar straightforward to machine into electrode blanks, electrochemical cell components, thermal blocks, and substrate stock without specialist processing — supporting rapid fabrication of precision components in both laboratory and advanced manufacturing environments.
Traceable Purity for Research & Metrology
At 4N5 purity, Copper Bar provides the traceability required for electrochemical characterisation, conductivity reference measurements, catalytic surface studies, and materials research where a well-defined, low-impurity copper composition is a primary experimental requirement rather than a background assumption.
Industrial Applications
Copper Bar at 4N5 purity is used across power electronics, thermal management, electrochemistry, and research sectors where a high-purity rectangular-section copper stock with traceable composition is required:
- ✦ High-Current Busbar Sections for Power Electronics & Switchgear
- Used as high-current busbar sections in power electronics and switchgear, where conductivity at 101% IACS minimises resistive losses in power distribution assemblies and the rectangular section provides efficient material utilisation and consistent cross-sectional electrical properties across the full bar length.
- ✦ Thermal Blocks & Cold Plates for Laser & High-Power Device Cooling
- Machined into thermal blocks and cold plates for laser and high-power device cooling, where thermal conductivity of 401 W/m·K and the flat reference surfaces of the rectangular section support precise thermal contact and efficient heat extraction from high-power components in demanding cooling assemblies.
- ✦ Electrode Blanks & Electrochemical Cell Components
- Used as electrode blanks and electrochemical cell components where 4N5 purity ensures that trace metallic impurities do not compromise electrochemical consistency, skew measurement results, or introduce contamination into sensitive electrochemical processes and analytical setups.
- ✦ Substrate Stock for Surface Modification & Thin-Film Research
- Applied as substrate stock for surface modification and thin-film research, where 4N5 purity provides a well-defined, low-impurity copper surface whose composition is a traceable experimental variable — supporting studies of surface reactivity, catalytic activity, and thin-film adhesion where standard copper bar purity would introduce uncontrolled impurity effects.
- ✦ Electrochemical Characterisation & Conductivity Reference Measurements
- Used in electrochemical characterisation, conductivity reference measurements, and materials research in laboratory and advanced manufacturing environments, where traceability and a well-defined low-impurity copper composition at 4N5 purity are primary experimental requirements that standard industrial copper bar cannot satisfy.
Tolerances
| Side Length | =<10mm | ±10% |
|---|---|---|
| Side Length | >10mm | ±1mm |
| Side Length (Of Longer Side) | >10mm | ±1mm |
| Side Length (Of Longer Side) | =<10mm | ±10% |
| Side Length (Of Longer Side) | >10mm | 1mm |
| Length | <100mm | ±1mm |
| Length | >=100mm | +5% / -1% |