Transformer materials
2026-04-30 15:26:28
What is Transformer Aluminium Strip?
Transformer aluminium strip is a high conductivity aluminium material used as a winding conductor in power and distribution transformers. It is typically made from 1050, 1060, or 1070 aluminium alloys and features precise thickness tolerance, smooth surface, and excellent electrical performance.
| TOLERANCE | |||||
| Major Brand | A1060(O) A1050(O) | ||||
| Thickness | 0.2-0.4 | 0.4-0.8 | 0.9-1.1 | 1.2-1.6 | 1.8-2.0 |
| tolerance | ±0.01 | ±0.015 | ±0.02 | ±0.025 | ±0.03 |
| Width | <100 | 100-200 | 201-500 | 501-1250 | >1250 |
| tolerance | ±0.1 | ±0.2 | ±0.2 | ±1 | ±2 |
| BURR AND COLLAPSE | |||||
| The width of aluminum belt | burr’s height | collapsed side’s height | |||
| <0.2 | 0.01 | ≥0.05-0.1 | |||
| 0.2-1.0 | 0.015 | ||||
| 1.1-1.5 | 0.02 | ||||
| >1.6 | 0.03 | ||||
| MECHANICAL PROPERTY | |||||
| U.T.S: 60-95N/mm2 | Elongation: >25% | ||||
| Density in 20℃ :2.703kg/dm3 | Max.resistance in 20℃:≤0.02825Ωmm2/m | ||||
Aluminium vs Copper in Transformer Winding
Cost Advantage
Aluminium is significantly more cost-effective than copper.
Weight
Aluminium is lighter, reducing transformer weight.
Conductivity
Copper has higher conductivity, but aluminium offers sufficient performance at lower cost.