99.9% Pure Soft Drawn Bare Copper Wire | Flexible Stranded Earth Conductor | 2.6mm – 8.0mm
High-Purity Uninsulated Stranded Copper Wire for Electrical Grounding and Industrial Applications.
Material: 99.9% High Purity Annealed Copper (Soft Drawn).
Structure: Multi-strand flexible construction (Class 2 / Class 5).
Diameters Available: 2.6mm, 3.0mm, 8.0mm (Customizable).
Characteristics: Excellent conductivity, high flexibility, and corrosion resistance.
Application: Earthing systems, lightning protection, jumpers, and cores for silicone heating cables.
Standard: Complies with IEC 60228 / ASTM B3.
Our Soft Bare Copper Stranded Wire is engineered for maximum conductivity and flexibility. Manufactured from 99.9% pure electrolytic grade copper, this uninsulated conductor is annealed (soft drawn) to ensure easy handling and installation in demanding environments.
Whether used as a primary earth wire (grounding conductor) to protect electrical systems or as the conductive core for industrial heating elements, this wire offers superior thermal and electrical performance.
Key Features & Benefits
✅ 99.9% Pure Copper (High Conductivity)
We use only premium Oxygen-Free High Conductivity (OFHC) or ETP copper. This ensures low resistance and high current carrying capacity, minimizing power loss and heat generation during operation.
✅ Superior Flexibility (Soft Drawn)
Unlike hard-drawn copper, our wire is fully annealed. This “soft” temper allows the wire to withstand vibration and bending without fatigue, making it perfect for flexible connections, jumpers, and routing through complex geometries.
✅ Robust Stranded Construction
The concentric stranded design provides high mechanical strength while maintaining flexibility. It resists physical damage and provides a reliable surface area for connections.
✅ Extreme Temperature & Environment Ready
As a bare metal conductor, it performs exceptionally well in high-temperature environments (such as heating applications) when used with appropriate insulators like ceramic or silicone. It is also highly durable for outdoor grounding grids.
Technical Specifications
| Property | Specification |
| Material | Annealed Bare Copper (Soft Drawn) |
| Purity | ≥ 99.9% |
| Conductor Type | Stranded (Class 2 or Class 5 Flexible) |
| Insulation | None (Bare) |
| Tensile Strength | ≥ 200 Mpa |
| Elongation | ≥ 30% |
| Compliance | IEC 60228, ASTM B3, ASTM B8 |
Size & Dimensions Table
| Nominal Diameter (mm) | Approx. Cross Section (mm²) | Structure (No./Dia.) | Approx. Weight (kg/km) |
| 2.6 mm | ~ 5.3 mm² | [e.g., 7/0.98] | [TBD] |
| 3.0 mm | ~ 7.0 mm² | [e.g., 7/1.13] | [TBD] |
| 8.0 mm | ~ 50.0 mm² | [e.g., 19/1.78] | [TBD] |
(Note: The values above are approximate. Please refer to the specific datasheet for exact strand count and resistance values based on your order.)
Primary Applications
This versatile bare copper conductor is essential for various industrial sectors:
Earthing & Grounding:
Main earth electrodes for buildings.
Lightning protection systems (Down conductors).
Grounding grids for substations and power plants.
Industrial Heating:
Used as the conductive core inside Silicone Heating Cables.
Internal jumpers for furnaces and high-temp machinery.
Power Transmission:
Overhead transmission and distribution lines.
Panel board jumpers and electrical bonding.
Why Choose Our Copper Wire?
Traceable Quality: Every batch comes with a material test report verifying purity.
Precision Manufacturing: Uniform strand tension and diameter control.
Global Shipping: Expert packaging to prevent oxidation during sea/air freight.
Customization: Available in specific strand counts or cut-to-length sizes.
B2B Inquiry: Need specific AWG sizes or large tonnage? [Contact Us] for a competitive quote and lead time.
🙋♂️ Frequently Asked Questions
Q: What does “Soft Drawn” mean?
A: “Soft Drawn” refers to copper that has been annealed (heat-treated). This process makes the wire softer and more flexible compared to “Hard Drawn” wire, making it easier to install and bend without breaking.
Q: Is this wire insulated?
A: No, this is Bare Copper Wire with no insulation. If you require insulated wire (such as PVC or Silicone coated), please check our other product listings or contact us for custom orders.
Q: Can this be used for heating elements?
A: Yes, due to its high melting point and conductivity, this bare copper stranded wire is excellent for use as the internal core for silicone rubber heaters or other heating element assemblies.
Q: How is the wire packaged to prevent oxidation?
A: We use industrial-grade shrink wrap and moisture-proof packaging for all shipments to ensure the copper arrives bright and free from oxidation.
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