7xxx Series High-Strength Aluminum Sheet Plate for Aviation

Product Overview

Composed of advanced aluminum-zinc-magnesium-copper alloys (7075 and 7050), these sheets undergo precision heat treatment (T6/T651 tempering) to achieve ultra-high tensile strength (≥500MPa) while retaining critical properties like corrosion resistance and fatigue durability. Trusted by leading aircraft manufacturers, they form the backbone of structural components in commercial airliners, military jets, and spacecraft, enabling fuel efficiency, payload optimization, and long-term operational safety.

Product Specifications

Features

Aerospace-Grade Strength: 7075-T651 sheets exhibit exceptional fatigue resistance (≥100MPa at 10⁷ cycles) and meet AMS 4037 standards, ensuring structural integrity in aircraft wings, fuselages, and landing gear subjected to repeated stress.

Lightweight Design: At 30% lighter than steel, it reduces aircraft weight to improve fuel efficiency by up to 15% while increasing payload capacity for passengers or cargo.

Corrosion Protection: Optional Alclad® coating—a thin layer of pure aluminum bonded to the alloy—enhances salt spray resistance (500+ hours), critical for components exposed to high humidity and atmospheric pollutants at high altitudes.

Precision Machinability: A superior surface finish (Ra ≤1.6μm) allows tight tolerances (±0.01mm) for complex aerospace parts like wing spars and engine mounts, ensuring seamless integration into aircraft systems.

Applications

Commercial Aviation: Wing spars, fuselage frames, and engine nacelles depend on 7075’s high modulus of elasticity (72GPa) to withstand aerodynamic forces during flight.

Military Aircraft: Fighter jet wings, missile casings, and helicopter rotor hubs utilize its ballistic resistance and ability to perform in extreme G-force conditions.

Spacecraft: Satellite structures and rocket fuel tanks benefit from its low thermal expansion coefficient (23.6×10⁻⁶/°C), maintaining dimensional stability in the extreme temperature fluctuations of space.

FAQ

Q: Is 7075 suitable for cryogenic applications?

A: Yes, it retains mechanical properties at temperatures as low as -253°C, making it ideal for liquid oxygen tanks and cryogenic fuel systems in rockets.

Q: Can it be welded?

A: While fusion welding is challenging due to zinc content, friction stir welding (FSW) or TIG welding with ER5356 filler metal produces strong, reliable joints for aerospace assemblies.

Q: What quality certifications does it hold?

A: It complies with AS9100, NADCAP, and ISO 9001 standards, ensuring traceability and performance consistency for aerospace applications.