Among the aluminum alloys, the strongest series belongs to the 7000 series of aluminum alloys, especially the 7075 aluminum alloy. This aluminum alloy has extremely high strength, and its tensile strength can reach more than 572MPa, and even theoretically 900MPa (but it needs to go through a specific injection molding process).

what is the strongest aluminium alloy

The following is a point-by-point introduction and summary of the strength characteristics of 7075 aluminum alloy:

Tensile Strength: The very high tensile strength of 7075 aluminum alloy is one of its remarkable features, its tensile strength is ≥ 572 MPa, and even higher values can be achieved under certain conditions.

Major Alloying Elements: The major alloying elements of 7075 aluminum alloy include zinc, copper and magnesium. The addition of these elements and the proportionality between them have a direct effect on the strength of the alloy. In particular, when the ratio of zinc and magnesium is appropriate, MgZn2, which has a significant strengthening effect, can be formed to further improve the strength of the alloy.

Cold-treated wrought alloy: 7075 aluminum alloy is a cold-treated wrought alloy, and its strength can be further increased by cold deformation treatment. It is also one of the strongest alloys commercially available, with strength far superior to that of soft steel.

Other Properties: In addition to its high strength, 7075 aluminum  plate alloy has good corrosion resistance, mechanical properties, and anodic response. Its fine grain size allows for better deep drilling performance and increased tool wear resistance.

Application Areas: Due to its high strength and excellent overall properties, 7075 aluminum alloy is widely used in aerospace, automotive, bicycle, shipbuilding, and other areas where high strength materials are required. For example, aircraft beams often use this alloy.


In summary, 7075 aluminum alloy is one of the strongest aluminum alloys known, and its high strength and excellent overall performance make it an important material for many high-end applications.

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