CCA-62% IACS: Standard Specifications and Applications
1. Introduction
1.1 Grade Overview
CCA-62% is the most common and cost-effective copper-clad aluminum grade:
CCA-62%Cross-Section
MEDIA TODO1.2 Market Position
CCA-62% accounts for approximately 70% of all CCA production.
2. Material Specifications
2.1 Composition
2.2 Standards Compliance
Complies with ASTM B566, IEC 62602, UL 758, and other standards.
3. Electrical Properties
3.1 Conductivity Requirements
Conductivity
MEDIA TODO3.2 Resistance Values
3.3 Ampacity
Diagram placeholder
MEDIA TODO4. Mechanical Properties
4.1 Tensile Properties
4.2 Bending Properties
5. Dimensional Standards
Standard AWG sizes range from 8 AWG to 24 AWG.
6. Application Guidelines
7. Comparison with Higher Grades
CCA-62% is the standard grade, while CCA-70% and CCA-80% offer higher conductivity.
8. Conclusion
CCA-62% is the ideal choice for cost-sensitive applications, offering the best balance between conductivity and cost.
Frequently Asked Questions
What is CCA-62%?
CCA-62% is the standard grade of Copper-Clad Aluminum with a minimum conductivity of 62% IACS. It consists of an aluminum core clad with a copper layer, manufactured using the Clad & Weld process with metallurgical bonding.
What applications are suitable for CCA-62%?
CCA-62% is suitable for building wiring (where permitted), coaxial cables, grounding conductors, and low-voltage applications. It offers the best cost-to-performance ratio among CCA grades.
How does CCA-62% compare to pure copper?
CCA-62% has approximately 62% of copper's conductivity, 59% lower weight, and 35-40% lower cost. For applications not requiring maximum conductivity, it provides an excellent alternative.
What is the derating factor for CCA-62%?
CCA-62% typically requires a derating factor of 0.80 for ampacity calculations, meaning it can carry approximately 80% of the current that a same-sized copper conductor can carry.
Figures
Create CCA-62%Cross-Section StructureDiagram
Create Conductivity Distribution Curve
Create Resistance vs Temperature Variation Curve
Tables
| Component | Specification | Typical Value |
|---|---|---|
| Core Material | Aluminum1350 | ≥99.5% Al |
| Cladding Layer | Copper | ≥99.9% Cu |
| Copper Volume Ratio | 10-15% | 12-14% |
| Property | Requirement | Typical Value |
|---|---|---|
| DCConductivity | ≥62% IACS | 63-65% IACS |
| ResistanceRate(20°C) | ≤2.78 μΩ·cm | 2.65-2.75 μΩ·cm |
| TemperatureCoefficient | 0.0040/°C | - |
| Temper | UTS (MPa) | YS (MPa) | Elongation (%) |
|---|---|---|---|
| Annealing(A) | 170-200 | 60-90 | 15-25 |
| SemiHard(H) | 220-260 | 180-220 | 5-10 |
| HardState(H) | 280-320 | 250-290 | 2-5 |
| AWG | Copper (A) | CCA-62% (A) | Derating Factor |
|---|---|---|---|
| 14 | 15 | 12 | 0.80 |
| 12 | 20 | 16 | 0.80 |
| 10 | 30 | 24 | 0.80 |
| Application | Suitability | Notes |
|---|---|---|
| Building Wire | Applicable | comply withLocal Regulations |
| Coaxial Cable | Applicable | HighFrequencyAdvantage |
| Motor Winding | Limited | Required AssessmentTemperature Rise |
| Grounding Conductor | Applicable | Cost Effective |
References
- ASTM B566-04: Copper-Clad Aluminum Wire ASTM (2020)
- IEC 62602: Copper-clad aluminum for electrical purposes IEC (2022)
- UL 758: Appliance Wiring Material UL (2021)