2219 T351 aluminum alloy is known for its high strength, exceptional thermal stability, and good machinability. Its copper-rich composition provides the alloy with excellent mechanical strength and fatigue resistance, while the T351 temper signifies that it has undergone solution heat treatment, stress relief, and natural aging to achieve stability. These characteristics make it an ideal material for high-temperature and demanding operational conditions.

This alloy is widely used in the aerospace and defense industries and for critical structural applications. It is commonly employed in aircraft fuselages, fuel tanks, and space vehicles, where high strength and thermal stability are essential. 2219 T351 is suitable for anodizing, forming a protective oxide layer to improve corrosion resistance, though its copper content necessitates careful application. Its weldability is excellent, particularly with TIG and MIG welding methods, making it highly suitable for a wide range of welded structures.

In terms of bending and forming, 2219 T351 aluminum alloy offers moderate formability. Its high strength can make complex forming processes challenging, but with the correct techniques, successful results can be achieved. Its fatigue resistance and mechanical stability make it a reliable choice for high-vibration environments and structures subjected to dynamic loads.

Corrosion resistance is naturally limited, especially in high-temperature and chemical environments, so additional protection treatments or coatings are recommended for outdoor use. Advantages of this alloy include high strength, thermal stability, excellent weldability, and fatigue resistance, while its disadvantages include limited corrosion resistance and reduced formability. These attributes make 2219 T351 aluminum alloy an excellent material for projects requiring durability and high performance.

Choosing Factors for 2219 T351

• Rod / Round Bar / Flat Bar
• Plate/Sheet
• Tube/Profile