2618A T6511 aluminum alloy is a wrought aluminum alloy based on copper (Cu) and magnesium (Mg), distinguished by its high-temperature strength and superior mechanical properties. It is especially preferred in aerospace and defense industries, as it maintains its strength even at elevated temperatures, making it suitable for critical applications. The T6511 temper indicates that it has undergone solution heat treatment, stress relieving, and natural aging, ensuring dimensional stability and resistance to distortion after machining. This alloy is widely used in high-performance pistons, aircraft components, and mechanical parts operating at elevated temperatures.

In terms of corrosion resistance, the 2618A alloy exhibits moderate performance compared to other aluminum alloys. Alloys in the 6xxx series (such as 6082 or 6061) offer better corrosion resistance, while the copper content in 2618A slightly limits this property. Therefore, protective treatments such as coating or anodizing are often applied. It is suitable for coating processes, and its durability can be enhanced through surface treatments. Compared to 7075 alloy, 2618A retains strength better at high temperatures, whereas 7075 provides higher strength at room temperature.

Regarding strength and mechanical properties, the 2618A alloy performs exceptionally well at elevated temperatures. This makes it more advantageous than the 2024 alloy in high-temperature applications. It also demonstrates strong vibration and fatigue resistance, making it suitable for dynamic loading conditions. As a result, it is commonly used in engine components and rotating systems. However, its bending (forming) capability is limited due to its high strength, and hot forming methods are generally preferred.

In terms of machinability, the 2618A alloy offers good performance and is well-suited for machining operations, especially in the T6511 temper. Tool wear can be controlled, and high surface quality can be achieved. However, its weldability is limited; like other high-copper alloys, it is prone to cracking during welding. Therefore, mechanical fastening or alternative joining methods are often preferred. Compared to the 6061 alloy, 6061 provides much better weldability, while 2618A stands out with its high-temperature performance.

In terms of applications, the 2618A T6511 alloy is widely used in aerospace, automotive, and defense industries. Typical applications include aircraft engine components, pistons, high-performance racing engines, and structural parts. While it shares similar application areas with 2014 and 2024 alloys, it stands out due to its superior high-temperature strength. Overall, it is an ideal choice for applications requiring high strength, temperature resistance, and fatigue durability.

MATERIAL COMPOSITION STANDARDS

2618A T6511 can be produced according to the following standards:
• 2618A T6511 Extrusion Round Bar; ASTM B221, UNS A92618, AIR 9048.150, ISO AlCu2Mg1.5Ni, WNR 3.1924, DTD 5014A
• 2618A T6511 Extrusion Plate; ASTM B221, UNS A92618, AIR 9048.150, ISO AlCu2Mg1.5Ni, WNR 3.1924, DTD 5014A
• 2618A T6511 Extrusion Wire; ASTM B221, UNS A92618, AIR 9048.150, ISO AlCu2Mg1.5Ni, WNR 3.1924, DTD 5014A
• 2618A T6511 Extrusion Tube; ASTM B221, UNS A92618, AIR 9048.150, ISO AlCu2Mg1.5Ni, WNR 3.1924, DTD 5014A
• 2618A T6511 Cold Drawn Round Bar; ASTM B211, UNS A92618, ISO AlCu2Mg1.5Ni, WNR 3.1924, EN 3553
• 2618A T6511 Cold Drawn Plate; ASTM B211, UNS A92618, ISO AlCu2Mg1.5Ni, WNR 3.1924, EN 3553
• 2618A T6511 Cold Drawn Wire; ASTM B211, UNS A92618, ISO AlCu2Mg1.5Ni, WNR 3.1924, EN 3553
• 2618A T6511 Cold Drawn Tube; ASTM B211, UNS A92618, ISO AlCu2Mg1.5Ni, WNR 3.1924, EN 3553
 

Characteristic Properties of 2618A T6511:

• Strength: High
• Machinability: Reasonable
• Weldability: Poor
• Formability: Good
• Corrosion Resistance: Moderate
• Heat Treatment: Yes
   

Some Well-Known Applications for 2618A T6511:
Aircraft engines and fuselages, high-tech industry applications, and automobile pistons.
 

STOCK
We produce and supply 2618A T6511 in rod, plate, tube, and profile forms.

• Rod / Plate
• Tube / Profile