The 2124 T851 aluminum alloy is known for its high strength, excellent machinability, and durability. Belonging to the aluminum-copper alloy class, it is particularly favored in industries like aerospace and space, where high-performance materials are required. The T851 temper, a specific heat treatment applied to the 2124 alloy, provides high strength and resistance to stress. Additionally, its lightweight and good machinability make it suitable for use in complex geometries and demanding applications.

The 2124 T851 alloy is not suitable for anodizing. Its high copper content inhibits the formation of an effective oxide layer during the anodizing process. Therefore, alternative protective coatings are typically used. In terms of weldability, the 2124 T851 alloy presents challenges. The high copper content increases the risk of cracking during welding, so special welding techniques and filler materials are necessary to minimize this risk.

Regarding bending and forming, the 2124 T851 aluminum alloy requires attention due to its high strength. However, with the right processing techniques, successful bending and forming can be achieved. Additionally, this alloy is suitable for use in high-vibration environments. Its high durability and elastic modulus make it ideal for components subjected to vibration, such as engine parts, structural components in aircraft, and other applications exposed to high-stress environments.

In terms of corrosion resistance, the 2124 T851 aluminum alloy has limited resistance due to its high copper content. This can restrict its use in challenging environments like marine and humid conditions. However, corrosion resistance can be improved with appropriate coatings and surface treatments. The advantages of the 2124 T851 alloy include high strength, excellent machinability, and light weight, while its disadvantages include lower corrosion resistance and welding challenges.

ALLOY DESIGNATIONS

Aluminium alloy 2124 T8151 has similarities to the following standard designations and specifications:

Plates per: 2124 T8151, ASTM B209, AMS QQ-A-250/29, UNS A92124, AMS 4101, ISO AlCu4Mg1

Choosing Factors for 2124 T8151 

SUPPLIED FORMS

2124 T8151 is supplied in the plate form.

• Plate