What is 1350 aluminum foil alloy?

1350 aluminum foil is a high-purity aluminum alloy. Aluminum coil “1350” refers to the alloy’s minimum aluminum content, which is 99.50%. 1350 is a commercially pure aluminum alloy often used in electrical applications due to its high conductivity and other desirable properties. Aluminum foil in 1350 alloy is the most frequently used product type.

1350 aluminum foil factory
1350 aluminum foil factory

1350 chemical composition of aluminum foil

The elemental content of aluminum foil made from 1350 aluminum alloy is primarily aluminum, with a minimum purity of 99.50%.

1350 alloy foil metal element content(%)
ElementAlSiFeMgZnMnTiCuV
Standard Value≥99.50.04310.2030.00130.00930.01040.020.00220.0039

Aluminum foil alloy 1350 properties (theoretical)

Compound FormulaAl
AppearanceMetallic powder or solid in various forms
Melting Point660℃
Boiling Point2500℃
Density2.6-2.8 g/cm³ (25 °C)
Electrical Resistivity28 10-9W·m
Poisson’s Ratio0.33
Tensile Strength97 Mpa
Thermal Conductivity230 W/m·K

1350 aluminum foil for transformer

1350 aluminum foil is a commonly used material in transformers. It has good electrical conductivity and corrosion resistance, so it has been widely used in transformer manufacturing.
1350 cable aluminum foil application specifications.

1350 O Aluminium Foil For Transformer Winding
AlloyTemper(annealed)Thickness(mm)Tensile Strength
Tensile Strength(Mpa)Elongation(%)
>0.2~4.0≥25
Thickness Tolerance(mm)
Thickness(mm）Tolerance(mm)
>0.20~0.40±0.02
>0.40~0.80±0.03
>0.80~1.10±0.04
>1.10~1.40±0.05
>1.40~2.00±0.06
>2.00~2.50±0.07
>2.50~3.00±0.08
Width Tolerance(mm)
Width(mm)Thickness(mm)
≤1.0>1.0~1.5>1.5~2.5
Width Tolerance(±)
≤1000.10.20.25
>100~3000.150.250.3
>300~6000.30.40.5
>600~10000.60.7–