Aluminum 7050

Aluminum 7050 is a high-strength, heat-treatable aluminum-zinc alloy offering high strength, good fracture toughness, and strong resistance to stress-corrosion cracking. Compared with 7075, 7050 is particularly valued for maintaining reliable properties in thicker sections, making it widely used for aerospace and highly loaded precision structures.

Appearance & Properties

Color: Silver-white to silver-gray

Density: Approx. 2.83 g/cm³

Tensile Strength: Approx. 480–550 MPa (common T7451 temper)

Corrosion Resistance: Good

Machinability: Good

Weldability: Poor

Strength & Toughness: Excellent

Surface Finishes: Anodizing, hard anodizing, bead blasting, polishing, painting, etc.

Typical Applications

Aluminum 7050 is primarily used in aerospace, UAVs, high-performance machinery, and high-strength industrial equipment.

Typical parts include aircraft fuselage structures, wing components, frames, bulkheads, high-strength brackets, large mounting components, and high-load precision CNC parts.

Advantages

• High strength and excellent strength-to-weight ratio

• Good fracture toughness

• Better stress-corrosion cracking resistance than common 7075-T6

• Good performance in thick-section components

• Suitable for large, highly loaded precision structures

Limitations

• Relatively high material cost

• Poor weldability

• Lower corrosion resistance than most 6000-series alloys

• Less cost-effective for general low-load components