1070 HO Aluminum foil strip for transformer winding
1070 HO aluminum foil strip is a pure aluminum alloy with an aluminum content of more than 99.7%, which is widely used in transformers. 1070 aluminum strip has high plasticity, corrosion resistance, electrical conductivity and good thermal conductivity, but is a low-strength aluminum alloy that has not been heat-treated to enhance its cutting performance. It can accept contact welding and gas welding. 1070 – O/HO aluminum foil strip for transformer winding, also known as 1070 aluminum transformer strip foil, mainly used for dry type and oil-immersed transformer winding. The thickness ranges of 1070 aluminum foil strip for transformer from 0.2mm to 3.00mm and width ranges from 10mm to 1500mm.
Mingtai Aluminum is a professional manufacturer of aluminum strips for transformers. We have multiple aluminum strip slitting production lines, and can customize the width and length of aluminum strips according to customer requirements. The 1070 O/HO transformer aluminum strip foil has a smooth surface without scratches, and the edge chamfer can reach 100% without burrs, resistivity and conductivity are better than the national and industry standards for transformers.
Specification of 1070 HO aluminum foil strip for transformer winding
| Alloy | 1070 |
| Temper | O/HO |
| Thickness (mm) | 0.08 – 3.00 |
| Width (mm) | 10 – 1500 |
| Conductivity (% IACS) | 1070-O ≥ 62.7% IACS |
| Elongation (%) | ≥20 (Thickness: 0.08–0.20) |
| ≥25 (Thickness: 0.20-3.00) | |
| U. T. S | 60-95N/mm2 |
| Density in 20℃ | 2.703kg/m3 |
| Resistivity (Ω·mm² /m) | ≤0.02825 |
| Burr’s height | 0.01–0.03mm vary with thickness of the strip |
| Collapsed side’s height | 0.05–0.1mm |
| ID | Ø 150mm,Ø300mm, Ø400mm, Ø500mm |
| Surface | Smooth, free from scratches and impurities |
| Application | Transformer winding |
| Packing | Eye to wall and eye to sky, wooden pallet and wooden case |
| Sample | Available |
| Remark | Transformer aluminum strip can be customized |
Chemical composition of 1070 HO aluminum foil strip for transformer winding
| Alloy | Al (%) | Si (%) | Fe (%) | Cu (%) | Mn (%) | Zn (%) | Mg (%) | Ti (%) | V |
| 1070 | 99.7 | 0.0431 | 0.203 | 0.0022 | 0.0104 | 0.0093 | 0.0013 | 0.02 | 0.0039 |
Edge deburring range of 1070 HO aluminum foil strip for transformer winding
| Thickness (mm) | ≤0.20 | ＞0.20 |
| Burr | ≤0.03 | ≤0.05 |
| Camber | ≤0.5 | ≤2 |
| Layering | ≤4 | ≤5 |
Tolerance range of 1070 HO aluminum foil strip for transformer winding
| Alloys | 1070-O/HO | |||||||
| Thickness (mm) | 0.08-0.20 | 0.20-0.40 | 0.40-0.80 | 0.80-1.10 | 1.10-1.40 | 1.40-2.00 | 2.00-2.50 | 2.50-3.00 |
| Thickness Tolerance (mm) | ±8% of nominal thickness | ±0.02 | ±0.03 | ±0.04 | ±0.05 | ±0.06 | ±0.07 | ±0.08 |
| Width (mm) | ＜100 | 100-300 | 300-600 | 600-1250 | 1250-1500 | |||
| Width Tolerance (mm) | ±0.10 | ±0.20 | ±0.30 | ±1.00 | ±2.00 | |||
Advantages of 1070 HO aluminum foil strip for transformer winding
◆Theedgeis smooth, no burrs
◆Round edge
◆High conductivity
◆High purity
◆Totally annealed
◆Surface clean
◆Stable
◆Low resistivity
◆High quality, competitive price, good reputation
◆Free sample, prompt delivery
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