1050 transformer aluminum strip foil is pure aluminum, with an aluminum content more than 99.5%. 1050 aluminum strip has excellent plasticity, strong corrosion resistance, high electrical and thermal conductivity, but it has low strength, is not heat treated, has poor machinability, and is suitable for gas welding, argon arc welding, and spot welding. The 1050 - O/HO aluminum foil strip is primarily used for dry type and oil-immersed transformer winding. The thickness of 1050 aluminum foil strip for transformers ranges from 0.2mm to 3.00mm, with widths ranging from 30mm to 1600mm.
specification of 1050 HO/O Aluminum Strip for Transformers
| Alloy | 1050 |
| Temper | O/HO |
| Thickness (mm) | 0.2 – 3.00 |
| Width (mm) | 30 – 1600 |
| Conductivity (% IACS) | 1050-O ≥ 60% 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 1050 HO/O aluminum strip for transformers
| Alloy | Al (%) | Si (%) | Fe (%) | Cu (%) | Mn (%) | Zn (%) | Mg (%) | Ti (%) | V |
| 1050 | 99.5 | 0.0431 | 0.203 | 0.0022 | 0.0104 | 0.0093 | 0.0013 | 0.02 | 0.0039 |
Edge deburring range of 1050 HO/O aluminum strip for transformers
| Thickness (mm) | ≤0.20 | >0.20 |
| Burr | ≤0.03 | ≤0.05 |
| Camber | ≤0.5 | ≤2 |
| Layering | ≤4 | ≤5 |
Tolerance range of 1050 HO/O aluminum strip for transformers
| Alloys | 1050-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 | |||
GNEE is a reputable global provider of aluminum goods, specialized in transformer aluminium strip foil. With several high-precision slitting lines and thorough quality control, GNEE guarantees:
Consistent alloy composition and conductivity exceed international norms.
Timely global delivery with secure export packaging.
Dimensions can be customized to fit a wide range of application requirements.
Choosing GNEE 1050 aluminum strip foil implies selecting a dependable, high-performance material partner for transformer construction.







