7075-T6 Alclad Aircraft Sheet
7075-T6 Alclad aluminum sheet is a corrosion-protected aircraft material designed for thin-gauge, strength-critical applications where direct environmental exposure is unavoidable.
Unlike bare 7075 plate products, this material features an Alclad layer of high-purity aluminum metallurgically bonded to the surface, providing sacrificial corrosion protection while retaining the high strength of the 7075-T6 core.
This combination makes Alclad 7075-T6 sheet particularly suitable for aircraft skins, exterior panels, and exposed structural surfaces, where long-term durability, fatigue performance, and corrosion resistance must be balanced within a lightweight sheet form.
Chemical Composition of 7075 Aluminum Alloy (Core Material)
| Element | Content (%) |
|---|---|
| Zinc (Zn) | 5.6 – 6.1 |
| Magnesium (Mg) | 2.1 – 2.5 |
| Copper (Cu) | 1.2 – 1.6 |
| Chromium (Cr) | 0.18 – 0.28 |
| Iron (Fe) | ≤ 0.50 |
| Silicon (Si) | ≤ 0.40 |
| Manganese (Mn) | ≤ 0.30 |
| Titanium (Ti) | ≤ 0.20 |
| Aluminum (Al) | Balance |
Chemical composition refers to the 7075 aluminum alloy core. Cladding is typically high-purity aluminum for corrosion protection
Mechanical Properties of 7075-T6 Aluminum Clad Sheet
(Thickness: 2.5 × 1500 × 3000 mm, Typical Test Results)
| Property | Value |
|---|---|
| Tensile Strength (Rm) | 568 – 575 MPa |
| Yield Strength (Rp0.2) | – 5497 12 MPa |
| Elongation | 14.2 – 15.8 % |
| Density | 2.81 g/cm³ |
| Elastic Modulus | 71 GPa |
7075-t6 clad sheet stock list
AL CLAD SHEET | Size (mm) |
7075-T6 | 0.8*1500*3000mm |
7075-T6 | 1.0*1500*3000mm |
7075-T6 | 1.2*1500*3000mm |
7075-T6 | 1.5*1500*3000mm |
7075-T6 | 2.0*1500*3000mm |
7075-T6 | 2.5*1500*3000mm |
7075-T6 | 3.0*1500*3000mm |
7075-T6 | 4.0*1500*3000mm |
7075-T6 | 5.0*1500*3000mm |
7075-T6 | 6.0*1500*3000mm |
Why Alclad 7075-T6 Is Used for Aircraft Skins
Aircraft skin structures are continuously exposed to moisture, temperature variation, and atmospheric contaminants, making corrosion resistance a critical design consideration.
While 7075 aluminum provides excellent strength and fatigue resistance, its copper content reduces natural corrosion performance. The Alclad layer addresses this limitation by acting as a sacrificial protective barrier, significantly improving resistance to surface corrosion without compromising the mechanical properties of the core alloy.
In thin sheet form, Alclad 7075-T6 allows designers to maintain structural efficiency and weight control while extending service life in exterior aircraft applications where unprotected high-strength alloys would otherwise be vulnerable.
