2219 Aluminum Sheet Plate
2219 aluminum sheet plate is a high-strength Al-Cu heat-treatable alloy belonging to the 2000 series, widely used in aerospace and high-temperature structural fields. It features excellent weldability, high fracture toughness, and stable mechanical properties across an ultra-wide temperature range from -269°C to 315°C. Available in bare and alclad versions, it is the preferred material for rocket propellant tanks, cryogenic vessels, aircraft skins, and high-temperature components.
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Overview
2219 aluminum alloy is a high-strength, copper-based (2000 series) alloy developed for high-temperature and structural applications in the aerospace industry. Unlike many other 2000 series alloys, 2219 is distinguished by its excellent weldability and its ability to maintain superior mechanical properties across an extreme temperature range—from cryogenic temperatures near absolute zero to elevated temperatures up to 315°C (600°F). It is often considered the premier choice for space-grade applications, particularly for liquid fuel tanks in launch vehicles and space shuttles.
Specification
Feature
1.Ultra-wide temperature stability: Maintains reliable performance from cryogenic -269°C to high-temperature 315°C.
2.Excellent weldability with low hot-cracking tendency, ideal for large welded structures.
3.High fracture toughness and fatigue resistance for long-term cyclic load service.
4.Good machinability, especially in annealed O temper for precision components.
5.Alclad version significantly improves corrosion resistance for exposed aerospace structures.
6.High strength-to-weight ratio, effectively reducing structural weight while ensuring load capacity.
7.Stable dimensional performance and good stress corrosion cracking resistance in T8 tempers.
Application
2219 aluminum sheet plate is mainly used in aerospace for aircraft shells, wings, skins, engine parts, fuel tanks, oil pipes, engine covers, cabin shells, rudder surfaces. It is widely applied in military defense for missile parts, and armored structures.
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