1050 1060 1070 Aluminum Strip for Transformer Winding

1050, 1060, and 1070 aluminum strips are currently popular choices for transformer windings. As “aluminum substitution for copper” becomes an industry consensus, selecting the wrong alloy grade could lead to a 20% efficiency loss!

Today we deeply analyze the hidden performance boundaries of these three fundamental alloy grades (1050/1060/1070) to help you precisely identify the best cost-performance solution.

1050 1060 1070 Aluminum Strip Core Performance Comparison

Scenario-Based Selection for 1050 1060 1070 Aluminum Strip

✅Scenario 1: High-Frequency, Low-Loss Transformers → Preferred Choice: 1070 Aluminum Transformer Strip

Applicable Products:

◆ Photovoltaic inverter transformers

◆ Data center UPS power supply transformers

◆ Electric vehicle charging pile transformers

Performance Advantages:

► 99.7% ultra-high purity aluminum (Fe≤0.25%), resistivity as low as 2.63μΩ·cm

► Processed in ultra-soft (O-temper) state; no edge cracking when winding with bend radius ≤ 1x strip thickness

► Tested by a charging pile manufacturer: 18% reduction in eddy current losses compared to 1060 grade

✅Scenario 2: General Oil-Immersed Transformers → Lock In: 1060 Aluminum Transformer Strip

Applicable Products:

◆ 10kV~35kV distribution transformers

◆ Rectifier transformers

◆ Electric furnace transformers

Performance Advantages:

► Golden ratio: Al≥99.6% + trace iron strengthening (0.25~0.35% Fe)

► Perfect balance of strength/conductivity: Short-circuit withstand capability 25% higher than 1070

► Surface smoothness Ra ≤ 0.5μm (highest industry grade), ensuring zero contamination of insulating oil

✅Scenario 3: High-Temperature, High-Stress Transformers → Choose: 1050 Aluminum Transformer Strip

Applicable Products:

◆ Class H insulation dry-type transformers (operating at 180°C)

◆ Mining explosion-proof transformers

◆ Rail transit traction transformers

Performance Advantages:

► Manganese-iron strengthening: Tensile strength exceeds 120MPa (10% above national standard)

► High-temperature dimensional stability: Thermal shrinkage rate < 0.03% at 200°C

► Passes 3000-hour salt spray test (ISO 9227 standard)

Why Choose Flait Aluminum

✅ Optimized Base Material

1070 Aluminum Strip: Vacuum degassing refining used, oxygen content ≤10ppm

1060 Aluminum Strip: Directional solidification casting, grain size ≤50μm

1050 Aluminum Strip: Addition of nano-scale Al-Ti-B modifier enhances strength without compromising conductivity

✅ Ultra-Precision Surface Treatment

Three-stage revolutionary surface process: Electrolytic cleaning → Nano-ceramic brushing → Micro-arc oxidation

Surface tension dyne value ≥34 mN/m (improves paint film adhesion by 300%)

Original Source:Transformer Aluminum Strip