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Grade: 7075
Composition: Al 90/Zn 5.5/Mg 2.5/Cu 1.5/Si 0.5
Form: Foil/Film/Sheet
Material: Aluminum
Commodity: Alloys
7075 Aluminum Foil is a high-strength aluminum-zinc-magnesium-copper alloy foil that offers exceptional tensile strength, fatigue resistance, and a good strength-to-weight ratio, making it a top choice for demanding mechanical and barrier applications. Its heat-treatable composition enables tailored performance while maintaining dimensional stability and corrosion resistance in controlled environments. Aerospace, defense, and precision engineering industries utilize it for lightweight protective laminates, high-load shielding layers, and thermal barrier structures. Specific applications include reflective insulation in aircraft fuselage interiors, high-strength protective wrappings for defense electronics, and thermally stable laminates in precision optical instruments. In research and innovation, 7075 foil plays a critical role in developing advanced structural-barrier hybrids, high-performance thermal control layers, and engineered laminates that combine mechanical robustness with functional surface properties. This synergy of mechanical and barrier performance cements its place in high-value scientific and industrial contexts.
Tolerances
Foil
| Thickness | <0.01mm | ±25% |
|---|---|---|
| Thickness | 0.01mm - 0.05mm | ±25% |
| Thickness | >0.05mm | ±10% |
Material Properties for Alloys
Mechanical Properties
| Element | Value |
|---|---|
| Hardness - Brinell | 150 |
| Elongation at break( % ) | 5-8% |
| Shear strength( MPa ) | 331 |
| Tensile strength( MPa ) | 510-538 |
Electrical Properties
| Element | Value |
|---|---|
| Electrical resistivity( µOhmcm ) | 5.15 |
| Temperature coefficient( K⁻¹ ) | - |
Thermal Properties
| Element | Value |
|---|---|
| Melting point( C ) | 447-635 |
| Thermal conductivity( W m⁻¹ K⁻¹ ) | 130@20°C |
| Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) | 24.4@20-250°C |
Physical Properties
| Element | Value |
|---|---|
| Density( gcm⁻³ ) | 2.8 |
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