Aluminum/Magnesium/Silicon Alloy Foil (Light Tight) (Al98/Mg 1/Si 0.6)

Aluminum/Magnesium/Silicon Alloy Foil (Light Tight) (Al98/Mg1/Si0.6) offers a unique combination of low weight, medium-to-high tensile strength, and complete light-blocking capability, making it ideal for applications requiring both mechanical durability and optical isolation. With 1% magnesium to enhance corrosion resistance and fatigue life, and 0.6% silicon to enable precipitation hardening, the alloy maintains exceptional stability under thermal cycling. Its light-tight property makes it invaluable in sensitive optical, electronic, and aerospace systems where stray light must be eliminated. Primary uses include spacecraft thermal shielding, optical sensor housings, and high-precision laboratory equipment linings. Benefiting technologies include advanced photodetection arrays, quantum optics experiments, and satellite imaging platforms. Research is ongoing to improve rolling processes for ultra-smooth surfaces, optimize microstructural uniformity, and enhance both mechanical and barrier properties, ensuring Aluminum/Magnesium/Silicon Alloy Foil (Light Tight) (Al98/Mg1/Si0.6) remains at the forefront of precision engineering materials.

Quick Links:

Properties

Reference & Citations

each

Material Properties for Alloys

Mechanical Properties

Element	Value
Hardness - Brinell	10-100
Elongation at break( % )	<20
Modulus of elasticity( GPa )	70
Izod impact strength( J m⁻¹ )	27-34
Shear strength( MPa )	160-200
Tensile strength( MPa )	150-430

Electrical Properties

Element	Value
Electrical resistivity( µOhmcm )	3.4-3.8
Temperature coefficient( K⁻¹ )	0.003

Physical Properties

Element	Value
Density( gcm⁻³ )	2.69

Thermal Properties

Element	Value
Specific heat( J K⁻¹ kg⁻¹ )	904@23°C
Thermal conductivity( W m⁻¹ K⁻¹ )	180-193@23°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ )	23@20-100°C