When sourcing Ethernet bulk cable for network infrastructure projects on Alibaba.com, one of the most critical decisions you'll face is choosing between pure copper and Copper Clad Aluminum (CCA) conductor materials. This choice impacts not only your initial procurement costs but also long-term performance, compliance status, and liability exposure.
Pure copper Ethernet cables use solid or stranded copper conductors throughout the entire cable cross-section. Copper has been the industry standard for telecommunications wiring for decades due to its excellent electrical conductivity, mechanical durability, and resistance to corrosion. Pure copper cables are available in two main constructions: solid core (for permanent installations in walls and ceilings) and stranded core (for patch cables and dynamic environments).
CCA cables, by contrast, feature an aluminum core with a thin outer layer of copper. The copper coating typically represents only 5-10% of the total conductor cross-section in low-quality CCA, though premium CCA may have 30-40% copper plating [2]. The aluminum core reduces material costs significantly but introduces several technical compromises that B2B buyers must understand before making bulk purchases.
Pure Copper vs CCA: Technical Specification Comparison
| Specification | Pure Copper Cable | CCA Cable | Impact on Deployment |
|---|---|---|---|
| Electrical Resistance | Baseline (100%) | 55% higher than copper [1] | Higher voltage drop in PoE applications |
| TIA/ANSI Compliance | Fully compliant | Non-compliant [1][3] | Cannot pass certification testing |
| Tensile Strength | High, flexible | Brittle, prone to breakage [3] | Installation damage risk |
| Oxidation Resistance | Excellent | Poor - aluminum oxidizes [3] | Connection degradation over time |
| Melting Point | 1085°C (copper) | 660°C (aluminum core) [3] | Higher fire hazard risk |
| Bend Radius | Superior flexibility | Limited, may crack [1] | Difficult in tight spaces |
| Certification Testing | Passes Fluke tests | Fails certification [1] | Cannot guarantee performance |

