4047 Aluminum Foil (Light Tight)

4047 Aluminum Foil (Light Tight) is an aluminum-silicon alloy foil engineered to offer excellent corrosion resistance, good formability, and complete light impermeability, ensuring zero pinhole transmission. Its silicon content improves wear resistance and thermal stability, while the light-tight property makes it ideal for protecting sensitive materials from photodegradation. This foil is widely used in aerospace, photonics, and packaging for light-sensitive materials, where precise environmental control is critical. Specific applications include protective barriers in optical instrumentation, wrapping of light-sensitive chemicals and films, and thermal shielding in aerospace systems. In research, its combination of mechanical durability, thermal stability, and total light exclusion supports studies requiring strictly controlled optical and environmental conditions. The synergy of alloy performance and optical shielding capability ensures its position as a specialized material in advanced manufacturing and high-precision scientific applications.

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Properties

Reference & Citations

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Material Properties for Alloys

Mechanical Properties

Element	Value
Hardness - Brinell	0
Hardness - Rockwell	0
Elongation at break( % )	0
Modulus of elasticity( GPa )	0
Tensile modulus( GPa )	0
Izod impact strength( J m⁻¹ )	0
Hardness - Vickers( kgf mm⁻² )	0
Shear strength( MPa )	0
Tensile strength( MPa )	0

Magnetic Properties

Element	Value
Initial permeability	0
Maximum permeability	0
Coercivity (Hc)( A m⁻¹ )	0
Curie temperature( C )	0
Remanence from saturation (Brem)( T )	0
Saturation flux density( T )	0
Saturation Induction( T )	0

Electrical Properties

Element	Value
Electrical resistivity( µOhmcm )	0
Temperature coefficient( K⁻¹ )	0

Thermal Properties

Element	Value
Crystallisation temperature( C )	0
Maximum use temperature in air( C )	0
Melting point( C )	0
Temperature - Austenitic( C )	0
Temperature - Martensitic( C )	0
Specific heat( J K⁻¹ kg⁻¹ )	0
Thermal conductivity( W m⁻¹ K⁻¹ )	0
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ )	0