Grade 1060 Transformer Aluminum Strip for Electrical Industry
1. Aluminum Grade 1060 Basics
Composition: 99.6% pure aluminum, with trace elements (<000000>le;0.35% Fe, <000000>le;0.25% Si).
Series: Part of the 1xxx series, known for high purity and excellent electrical/thermal conductivity.
2. Key Properties
Electrical Conductivity: ~61% IACS (International Annealed Copper Standard), making it suitable for electrical applications.
Thermal Conductivity: High, aiding in heat dissipation.
Mechanical Properties:
Soft and ductile, especially in annealed condition.
Lower tensile strength compared to copper or aluminum alloys (e.g., 1350), requiring careful handling to avoid deformation.
Prone to creep under sustained mechanical stress.
3. Applications in Transformers
Cost-Effective Windings: Used in distribution transformers where cost and weight savings outweigh the need for compact size.
Formability: Easily wound into coils due to its ductility.
Thermal Management: Effective heat dissipation reduces overheating risks.
4. Advantages
Lower Cost: Cheaper than copper and some aluminum alloys.
Lightweight: Reduces transformer weight, beneficial for large installations.
Corrosion Resistance: Natural oxide layer protects against environmental degradation.
5. Challenges and Considerations
Lower Conductivity: Requires larger cross-sectional areas compared to copper for equivalent current capacity.
Mechanical Strength: Joints may loosen over time due to creep; specialized connectors or welding (e.g., ultrasonic) are recommended.
Oxidation at Connections: Requires anti-oxidant compounds or plating to maintain conductivity at terminals.
6. Comparison with Other Grades
vs. 1350 aluminum :
1350 (99.5% Al) is optimized for electrical use, with marginally lower purity but enhanced conductivity (62% IACS).
1060 may be chosen for its slightly lower cost or regional availability.
vs. Copper:
Copper offers superior conductivity (100% IACS) but is heavier and more expensive.
7. Standards and Best Practices
Standards: Refer to IEC 60118 or ASTM B230/B231 for electrical conductor specifications.
Fabrication: Annealing improves formability; proper joint design mitigates creep risks.