2219 T6 Aluminum

2219-T6 aluminum is a high-strength aluminum alloy, particularly suitable for aerospace and other high-stress, weight-critical applications.

2219 T62 Aluminum Alloy Composition and Basic Properties

2219 aluminum alloy belongs to the aluminum-copper series, with high strength and good corrosion resistance, particularly suitable for high-temperature environments. It is commonly used in aerospace and industrial structures where high-temperature resistance, corrosion resistance, and good mechanical properties are required.

The basic composition of this alloy includes copper as the main alloying element, along with small amounts of manganese, silicon, and magnesium.

T6 Temper 2219 Aluminum Heat Treatment Process

• Solution Heat Treatment: In the T6 condition, 2219 aluminum alloy is first heated to the solution temperature (usually between 495°C and 520°C) to completely dissolve the solute elements in the alloy, forming a homogeneous solid solution.
• Artificial Aging: Then, artificial aging is performed at a lower temperature (approximately 190°C to 210°C) to precipitate the solid solution in the alloy and enhance its strength. This process controls the size and distribution of the precipitate phase by adjusting the time and temperature to maximize strength.

2219 T62 Aluminum Mechanical Properties

• Tensile Strength: 2219 aluminum in the T6 condition has a high tensile strength, making it perform excellently in high-stress and high-load applications.
• Yield Strength: The yield strength of 2219 aluminum in the T6 condition is also relatively high, ensuring that it maintains stable mechanical properties under load.
• Ductility: Although 2219-T6 aluminum has high strength, its ductility is relatively low, ranking as the second-lowest in ductility among all 2219 series alloys. The elongation at fracture is typically around 8%-10%, meaning the alloy is relatively brittle and not suitable for applications requiring high ductility or large deformations.

2219 T62 Aluminum Applications

2219 T62 Aluminum Welding and Machining Performance

• Weldability: Due to its high copper content, 2219-T6 aluminum has poor weldability. Hot cracking may occur during welding, so special care must be taken to use the appropriate welding methods and alloys to reduce the brittleness of the heat-affected zone during welding.
• Machinability: After solution heat treatment and artificial aging, 2219-T6 aluminum alloy has high hardness, which means it requires harder tools for machining. Cutting and drilling may require higher cutting forces.

2219 T62 Aluminum Corrosion Resistance

Corrosion Resistance: Although 2219-T6 aluminum has high strength, its corrosion resistance is lower compared to other aluminum alloys (such as 7050 or 6061 aluminum), particularly in chloride environments. Therefore, additional corrosion protection measures such as coatings or anodizing treatments should be considered in applications.

2219 T62 Aluminum Advantages and Limitations

2219 T62 Aluminum Advantages

• High tensile strength and yield strength, suitable for environments with high stress and high load.
• Excellent high-temperature resistance, ideal for high-temperature operating environments.
• Good fatigue resistance, suitable for use in repetitive stress environments.

2219 T62 Aluminum Limitations

• Due to its low ductility, it is not suitable for applications that require large deformations or complex shaping.
• Poor weldability, requiring additional process control.
• Relatively low corrosion resistance, suitable for use in low-corrosion environments.

2219-T6 aluminum, as a high-strength aluminum alloy, is particularly suitable for applications in high-load, high-stress, and high-temperature environments, such as structural components and engine parts in the aerospace industry. However, its low ductility makes it unsuitable for applications that require complex shapes or large deformations.

2219 T6 Aluminum Mechanical Properties