Application Fields
Power Industry: Manufacturing ultra-high voltage cables, transformer winding wires, transmission conductors, etc.Electronics and Electricals: Producing precision electronic components, integrated circuit leads, high-frequency cables, etc.
Special Materials: Used for high-reliability conductive components in aerospace and military industries, as well as raw materials for high-purity alloys.
The mainstream process is: electrolytic copper raw material → vacuum smelting (or inert gas protection) → continuous casting and rolling → surface treatment (anti-oxidation) → finished product.
| Parameter Category | Common Specifications/Parameter Values |
| Material Standards | - China: GB/T 5231-2022 (T1, TU1, TU2, etc., where TU1 and TU2 are oxygen-free copper) |
| - International: ASTM B187, JIS C1020, etc. |
| Purity | Copper (Cu) ≥99.97%, oxygen (O) ≤0.003%, total impurity content ≤0.03% |
| Diameter Range | - Conventional: φ6.0mm~φ30.0mm |
| - Customized: φ0.5mm~φ50.0mm (adjusted according to processing requirements) |
| Electrical Conductivity | ≥100% IACS (at 20℃) |
| Mechanical Properties | - Tensile strength: ≥200MPa (soft state); ≥300MPa (hard state) |
| - Elongation: ≥30% (soft state); ≥10% (hard state) |
| Surface Quality | Smooth without burrs, oxide layers, or cracks; anti-oxidation can be enhanced by tin plating, silver plating, etc. |
| Packaging Method | Coiled packaging (usually 500kg~3000kg per coil), wrapped with moisture-proof paper and steel strips, or customized as required |
| Implementation Standards | - Domestic: GB/T 13808-2013 Copper and Copper Alloy Rods |
| - Industry standards: JB/T 4670-2013, etc. |
| Comparison Item | Oxygen-free Copper Rod | Ordinary Copper Rod (e.g., Electrical Copper Rod) |
| Oxygen Content | ≤0.003% | 0.02%~0.04% (containing copper oxide impurities) |
| Conductivity | ≥100% IACS | 97%~99% IACS |
| Workability | Resistant to oxidation during high-temperature processing, suitable for fine drawing | Prone to oxidation at high temperatures, limited drawing precision |
| Application Scenarios | High-end cables, electronic components, military industries, etc. | Ordinary wires, cables, general electrical components |