Aluminum Alloy 7075 Data Sheet

ALUMINUM ALLOY 7075 GENERAL DESCRIPTION :

What is Alloy 7075?

7075 aluminum alloy is known for its high strength, hardness, and fatigue resistance. It’s lighter than many metals and widely used in aerospace for its high strength-to-weight ratio.

Main Alloy Chemistry Typical

Element

Si

Fe

Cu

Mn

Mg

Zn

Cr

Ti

Others 

Al

Maximum Content

0.40

0.50

1.2 - 2.0

0.30

2.1 - 2.9

5.1 - 6.1

0.04 - 0.35

0.18 - 0.28

0.15

Remainder

TYPICAL MECHANICAL DATA for 7075 ALUMINUM

Physical Performance Indicators

Tensile Strength (MPa)

Yield Strength (Mpa)

Elongation (%)

7075 - T6

560

480

8

7075 - T651

550

460

8

7075 - T7351

510

420

8

*LIMITATIONS OF LIABILITY AND DISCLAIMER: HDM shall not be liable for any damages arising from the use of the information contained in this document, or for the applicability of this document to the described “application”. The provided information and data are believed to be accurate to the best of our knowledge, but all data should be considered as typical values only. They are for reference and general information purposes, and are not recommended for specification, design, or engineering purposes. HDM does not provide any warranty, implied or expressed, regarding the creation or accuracy of the data provided in this document.

Product Capacities of Alloy 7075

Typical Uses

As the most popular aircraft aluminum, 7075 aluminum reigns supreme in aerospace for its unbeatable combination of high strength and low weight.
This “workhorse alloy” forms the backbone of numerous aircraft structures, including critical components like wings, fuselages (especially keels), and high-stress elements like spars and stringers. Its excellent fatigue resistance makes it ideal for withstanding the constant stress and strain of flight. While its weldability is a drawback, 7075’s exceptional machinability allows for complex shapes crucial in modern aircraft design.

FAQs

How strong is 7075 aluminum compared to steel?

7075 aluminum is among the strongest aluminum alloys, boasting a tensile strength of approximately 570 MPa in T6 temper. This strength is comparable to many mild steels, although most steels possess higher tensile strengths. Despite this, 7075 aluminum's strength-to-weight ratio surpasses that of most steels.

What are the cost implications of choosing 7075 aluminum over 6061 aluminum for a project?

Opting for 7075 aluminum instead of 6061 aluminum can significantly increase project costs. This is due to its higher content of alloying elements like zinc and copper, more intricate manufacturing processes, and challenging machining conditions. These conditions necessitate specialized tooling and slower speeds. For more information on the differences in performance and application, refer to our blog : 6061 Aluminum vs 7075 Aluminum

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