The 2618A T6 aluminum alloy is an Al-Cu-Mg-Ni-Fe based alloy known for its high temperature resistance and superior mechanical properties, widely used especially in aerospace and defense industries. The T6 temper is achieved through solution heat treatment and artificial aging, providing high strength to the alloy. This alloy is particularly preferred in pistons, engine components, and structural parts due to its ability to retain mechanical properties even at elevated temperatures. Compared to high-strength alloys like 7075-T6, it offers better high-temperature performance, while it remains more stable at elevated temperatures than 2024-T3 alloy.

In terms of corrosion resistance, 2618A T6 does not perform as well as pure aluminum or 5xxx series alloys; however, this drawback can be significantly mitigated with proper surface treatments. Anodizing and coating processes can notably improve its corrosion resistance. Compared to 6061-T6 alloy, 6061 has better natural corrosion resistance, whereas 2618A is preferred in environments requiring high-temperature strength. Therefore, 2618A is typically used with protective coatings.

Regarding strength and vibration behavior, 2618A T6 exhibits very good performance. Its high tensile and yield strength allows safe use in heavy load-bearing systems. Additionally, its good fatigue resistance and vibration damping capability provide advantages, especially in engines and dynamic systems. Compared to 2014 and 2024 alloys, 2618A offers better high-temperature strength, while 7075 may provide higher strength at room temperature but loses performance at elevated temperatures.

In terms of machinability, bending, and formability, 2618A T6 shows moderate performance. Although its machinability is good, tool wear can occur faster due to its high strength. Its bending and cold forming capabilities are limited, and hot forming is generally preferred. In this respect, 6061 alloy is more formable, while 2618A is used in performance-oriented applications. It has good coatability, and surface durability can be enhanced especially through hard anodizing.

In terms of weldability, 2618A alloy has limited performance, and mechanical fastening is generally preferred instead of welding. This is a disadvantage compared to alloys like 6061 with better weldability. However, its primary applications include aerospace, automotive (especially racing engines), defense, and high-performance engineering applications. Thanks to its combination of high-temperature stability, good fatigue resistance, and strength, 2618A stands out as an indispensable material in critical engineering components.

MATERIAL COMPOSITION STANDARDS

2618A T6 can be produced in the following standards.

• 2618A T6 Extrusion Round Bar; ASTM B221, UNS A92618, DTD 717, DTD 5084A, ISO AlCu2Mg1.5Ni, WNR 3.1924,
• 2618A T6 Extrusion Flat; ASTM B221, UNS A92618, DTD 717, DTD 5084A, ISO AlCu2Mg1.5Ni, WNR 3.1924,
• 2618A T6 Extrusion Wire; ASTM B221, UNS A92618, DTD 717, DTD 5084A, ISO AlCu2Mg1.5Ni, WNR 3.1924,
• 2618A T6 Extrusion Tube; ASTM B221, UNS A92618, DTD 717, DTD 5084A, ISO AlCu2Mg1.5Ni, WNR 3.1924,
• 2618A T6 Extrusion Forging; ASTM B221, UNS A92618, DTD 717, DTD 5084A, ISO AlCu2Mg1.5Ni, WNR 3.1924,
 

Characteristic Properties for 2618A T6: 

• Strength: High level
• Machinability: Moderate
• Weldability: Low
• Formability: Good
• Corrosion Resistance: Average
• Heat Treatment: Yes

Some Well-Known Applications for 2618A T6: 
In aerospace industry jet engines,
Widely used especially in the defense industry,
In the automotive racing sector,

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We produce/supply 2618A T6 in rod/flat bar and tube/profile forms.​

• Rod / Flat Bar
• Tube / Profile