2219 T37 aluminum alloy is a copper-based (Al-Cu) high-strength alloy that is particularly preferred in applications requiring high-temperature performance. The T37 temper condition indicates a solution heat-treated and then stabilized structure through controlled deformation. This alloy is widely used especially in the aerospace industry, including cryogenic tanks, fuel tanks, and structural components exposed to high temperatures. Due to its ability to retain mechanical properties at elevated temperatures, 2219 offers superior performance compared to 2024 and 2014 alloys.

In terms of corrosion resistance, 2219 T37 alloy does not exhibit as high resistance as pure aluminum or 5xxx series alloys; however, its performance can be significantly improved with proper surface treatments and coatings. Corrosion resistance can be enhanced through alclad coating or anodizing processes. Compared to 7075 alloy, 2219 provides better weldability, while its corrosion resistance may be similar or slightly lower. Although its use in marine environments is limited, it is highly reliable in controlled atmospheres.

Regarding mechanical strength, 2219 T37 alloy stands out with its high tensile and yield strength. Its limited loss of strength at elevated temperatures makes it especially critical for aerospace and defense industries. While 2024 alloy offers a good strength-to-weight ratio, 2219 distinguishes itself with high-temperature stability. Although 7075 provides higher strength at room temperature, it shows more significant performance degradation at elevated temperatures. Therefore, 2219 is preferred in components operating under thermal loads.

In terms of machinability and formability, 2219 alloy has moderate machinability. Good results can be achieved in machining operations with appropriate cutting tools, but it is not as easy to machine as free-machining alloys like 2011. Its bending and forming characteristics depend on the temper condition, and in the T37 condition they are limited, requiring careful process control. Precautions must be taken against cracking during cold forming. Nevertheless, desired geometries can be achieved through controlled deformation processes.

In terms of weldability, vibration behavior, and coatability, 2219 alloy is highly advantageous. It can be successfully joined using TIG and MIG welding methods, providing a significant advantage over 2024 and 7075 alloys. It performs well under vibration and fatigue conditions, offering reliability under dynamic loads. It also has high coatability, and its surface properties can be enhanced both aesthetically and functionally. Due to these features, 2219 T37 alloy stands out as a critical material in aerospace, defense, and high-performance industrial applications.

MATERIAL COMPOSITION STANDARDS

2219 T37 can be provided according to the following standards:
• 2219 T37 Sheet; ASTM B209, UNS A92219, ISO AlCu6Mn, AMS 4295D
• 2219 T37 Plate; ASTM B209, UNS A92219, ISO AlCu6Mn, AMS 4295D
 

Characteristic Properties for 2219 T37: 

• Strength: Very Good
• Machinability: Poor
• Weldability: Very Good
• Formability: Moderate
• Corrosion Resistance: Above Average
• Heat Treatment: Yes
   

Some Well-Known Applications for 2219 T37: 
In rocket engine boosters and fuel tanks,
In the engine skeletons of aircraft and rockets,
Used in high-strength engineering applications and generally in the aerospace industry.
 

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We supply 2219 T37 in sheet/plate forms.​

• Sheet
• Plate