EN 13605 Cu-OF (CW008A) Square Hollow Copper Tube Conductor
EN 13605 Cu-OF (CW008A) hollow copper conductors are engineered for high-current transmission, efficient cooling, and long-term electrical reliability. Manufactured from oxygen-free high-conductivity copper, these hollow conductors combine excellent electrical performance with enhanced thermal management, making them ideal for demanding electrical and power applications.
Product Overview
Material: Cu-OF (CW008A) – Oxygen-Free Copper
Standard: EN 13605
Form: Hollow square / rectangular / round conductors
Purity: ≥ 99.95% Cu
Typical Conductivity: ≥ 101% IACS
Size Range of Cu-OF (CW008A) Hollow Copper Conductor
Parameter | Typical Range |
Outer Size | 8 × 8 mm – 60 × 60 mm |
Inner Hole Diameter | Ø4 mm – Ø30 mm |
Wall Thickness | 1.5 – 10 mm |
Length | Coil or straight length |
Weight Tolerance | 0 / +5% |
Dimensional Tolerance | EN 13605 compliant |
Custom cross-sections and tolerances are available upon request.
Mechanical & Electrical Properties of Cu-OF (CW008A) Hollow Copper
Property | Cu-OF (CW008A) |
Electrical Conductivity | ≥ 101% IACS |
Resistivity (20°C) | ≤ 0.0170 μΩ·m |
Tensile Strength | 200 – 250 MPa |
Yield Strength | 70 – 100 MPa |
Elongation | ≥ 30% |
Density | 8.94 g/cm³ |
Oxygen Content | ≤ 0.001% |
Usage of Cu-OF (CW008A) Hollow Copper
Electrical & Power Engineering
High-current busbar systems
Switchgear and power distribution units
Substations and transformer connections
Thermal & Cooling Systems
Water-cooled conductors
Induction heating equipment
Resistance welding machines
Industrial & Infrastructure
Electrolysis and electroplating lines
Rail traction and power electronics
Renewable energy systems (wind, solar inverters)
Machining & Assembly Use
Easily machinable for CNC cutting, drilling, and bending
Suitable for brazing, soldering, and pressure-fit joints
Compatible with insulated or coated assemblies
Cu-OF vs Cu-ETP Comparison
Property | Cu-OF (CW008A) | Cu-ETP (CW004A) |
Oxygen Content | ≤ 0.001% | ~0.04% |
Conductivity | ≥ 101% IACS | ≥ 100% IACS |
Hydrogen Embrittlement | None | Possible |
High-Temperature Stability | Excellent | Moderate |
Welding / Brazing | Excellent | Limited |
Recommended Use | High-end electrical & cooling | General electrical |
Why prefer Cu-OF?
Cu-OF is preferred where high reliability, thermal cycling, and welding performance are critical.
Ultra-high electrical conductivity
Excellent heat dissipation via hollow design
No hydrogen embrittlement risk
Superior welding, brazing & forming performance
Long service life in high-current environments
EN 13605 compliant with full traceability
Contact Shenzhen Chinalcometal to source high-quality hollow copper conductors . We offer hollow square, rectangular, and round conductors with flexible solutions tailored to your needs — whether you require custom specifications or small-batch ready stock with precise cutting.
