7075 Aluminum Alloy (AL7075) Sheets/Plates

Aluminum alloy 7075 (AL7075) is another "aircraft grade" aluminum with zinc and copper as its major alloying elements (typically composed of 90.0% Al, 5.6% Zn, 2.5%Mg, 0.23%Cr, and 1.6% Cu, although these numbers nominally fluctuate depending upon manufacturing factors).  Its density is 2.81 g/cm3 (0.102 lb/in³), which is relatively light for a metal. 7075 aluminum alloy is one of the strongest aluminum alloys available, making it valuable in high-stress situations. The copper content of 7075 aluminum increases its susceptibility to corrosion, but this sacrifice is necessary to make such a strong-yet-workable material.

Like aluminum alloy 2024 ((AL2024), AL7075 is a flexible and durable aluminum alloy extremely useful in highly stressed parts. Typically used in aerospace and defense, automotive, manufacturing and other applications requiring lighter weight and durable materials. This alloy features a high strength, low density (high strength-to-weight ratio), but also thermal properties and ability to be polished which makes AL7075 a preferred choice for the mold making industry. Furthermore, it can be further improved by how it is strengthened using a process known as heat-treatment, sometimes referred to as “tempering”, where  high heat (300-500 ºC) is used to reconfigure the metal’s crystal structure to strengthen its overall mechanical properties. There are many methods of tempering 7075 aluminum with each tempering process providing the 7075 aluminum with its own distinct values and characteristics. The 7075-T6 is a common temper for aluminum plate and bar stock but 7075 aluminum is also available as annealed (O Temper) or other or tempered grades such as 7075-T651. 

In selecting an aluminum alloy, its mechanical properties should be carefully considered, some important measures being the ultimate strength, yield strength, shear strength, fatigue strength, as well as the modulus of elasticity and shear modulus.

The yield strength of a material is defined as the maximum amount of stress (or force over some area) that will not permanently deform a material. The 7075 aluminum alloy has a tensile yield strength of 503 MPa (83,000 psi), which means it takes 503 MPa of stress on a piece of 7075 alloy before it cannot return to its original shape. This value shows the huge benefit of alloying aluminum, and why 7075 is a chosen metal for structural materials such as aluminum tubing for frames.

The ultimate strength of a material indicates the maximum amount of stress the material can undertake till its fracture point. Before this fracture point, the material will undergo plastic (or permanent) deformation, and will not return to its original shape. This value is useful for cases where this kind of deformation is possible, such as in high-risk applications (military, skyscrapers) where 7075 is usually implemented. 7075 aluminum has an ultimate tensile strength of 572 MPa (83000 psi), which is impressively high considering its low density.

The shear strength measures the maximum amount of “shearing” stress that a material can experience before it permanently deforms. The shear strength of 7075 aluminum alloy is 331 MPa (48000 psi).

The modulus of elasticity and shear modulus are measures of a material’s resistance to deformation. The modulus of elasticity for 7075 aluminum is 71.7 GPa (10,400 ksi), and it's shear modulus is 26.9 GPa (3900 ksi). Generally, this alloy is strong and resists deformation well, which suits it for applications which need a tough-yet-light metal.

The 7075 aluminum is often used in the aerospace industry, which has increased concern for fatigue failure. A material can still fail, even though it experiences a force much less than its yield point. If this stress is cyclical, meaning that the material is periodically loaded with this force enough times, micro fractures can occur which weaken the material and will eventually cause it to break. The fatigue strength is a measure of a material’s ability to withstand this cyclical loading, and is useful for applications where a part created using this material is subject to repetitive loading cycles (such as in aircraft or motor vehicles). The fatigue strength of 7075 aluminum alloy is 159 MPa (23,000 psi).

The AL7075 sheets/plates are offered as part of our own branded (AVIATIONEU NEW ERA) product lines. They are available in different tempers (T6 or T651), cut to order dimensions and specifications depending on the wanted order quantity and requirements.

For additional information, please refer to our Brief Guide on Aluminum Grades & Temper Designations,  the individual product presentations or contact us.

7075 Aluminum Alloy (AL7075) Sheets/Plates

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AVIATIONEU NEW ERA 7075...

Aluminum alloy 7075 (AL7075) is another "aircraft grade" aluminum with zinc and copper as its major alloying elements. Like aluminum alloy 2024 ((AL2024), AL7075 is a flexible and durable aluminum alloy extremely useful in highly stressed parts. Typically used in aerospace and defense, automotive, manufacturing and other applications requiring lighter weight and durable materials. This alloy is one of the strongest alloys available and is comparable to many types of steel featuring a high strength, low density (high strength-to-weight ratio), but also thermal properties and ability to be polished which makes AL7075 a preferred choice for the mold making industry. 

AL7075 aluminum alloy sheets are offered as part of AVIATIONEU NEW ERA product lines. Sourced from quality producers, they come in T6/T651 tempers (heat treated) and offered for cut to order in different thicknesses, widths and lengths, consisting a cost effective solution when large quantities of such sheets are demanded. Unit of sale is 1 Ton (US or Metric as specified) with Minimum Order Quantity (MOQ) 1 Ton. Sea/sea-surface transport to customer destinationcan be provided. Approximate time for shipping: usually 1-2 months from the time of order payment depending on the ordered quantity. Appearing price is indicative per unit of sale.  

For additional information, please refer to our attached Brief Guide on Aluminum Grades & Temper Designations, the individual product presentations or contact us for quotation.