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Formula: Al 88/Si 12
Form: Foil/Film/Sheet
Material: Aluminum/Silicon
Commodity: Alloys

Aluminum/Silicon Alloy Foil (Al88/Si12)

Aluminum/Silicon Alloy Foil (Al88/Si12) is a lightweight, high-performance material with excellent thermal conductivity and dimensional stability, owed to its elevated silicon content. This alloy exhibits low thermal expansion, making it ideal for applications where precision and heat resistance are critical. Its corrosion resistance and mechanical integrity at elevated temperatures are further enhanced by silicon’s role in refining grain structure and reducing density. Primary industries utilizing this foil include electronics, automotive, and aerospace. Specific uses range from semiconductor packaging substrates and thermal management sheets to lightweight shielding in aerospace assemblies. In research, it plays a vital role in studies of thermal interface materials, high-performance laminates, and microstructural engineering of light alloys. Its ability to combine stability, low weight, and heat management ensures continuing value in cutting-edge scientific and industrial developments.
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Tolerances

Foil
Thickness <0.01mm ±25%
Thickness 0.01mm - 0.05mm ±25%
Thickness >0.05mm ±10%

Material Properties for Alloys

Mechanical Properties
Element Value
Elongation at break( % ) <20
Modulus of elasticity( GPa ) 71.1
Tensile strength( MPa ) 241.5
Electrical Properties
Element Value
Electrical resistivity( µOhmcm ) 5.56
Thermal Properties
Element Value
Melting point( C ) 577
Thermal conductivity( W m⁻¹ K⁻¹ ) 121@23°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 20.4@20-100°C
Physical Properties
Element Value
Density( gcm⁻³ ) 2.66

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