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Aluminum alloy 7075 is an aluminum alloy, with zinc as the primary alloying element. It is strong, with a strength comparable to many steels, and has good fatigue strength and average machinability. It has lower resistance to corrosion than many other Al alloys, but has significantly better corrosion resistance than the 2000 alloys. Its relatively high cost limits its use to applications where cheaper alloys are not suitable.
7075 aluminum alloy‘s composition roughly includes 5.6–6.1% zinc, 2.1–2.5% magnesium, 1.2–1.6% copper, and less than a half percent of silicon, iron, manganese, titanium, chromium, and other metals. It is produced in many tempers, some of which are 7075-0, 7075-T6, 7075-T651.
7075 T651
Due to their high strength-to-density ratio 7000 series alloys such as 7075 are often used in transport applications, including marine, automotive and aviation.These same properties lead to its use in rock climbing equipment, bicycle components, inlineskating-frames and hang glider airframes are commonly made from 7075 aluminium alloy. Hobby grade RC models commonly use 7075 and 6061 for chassis plates. 7075 is used in the manufacturing of M16 rifles for the American military. In particular high quality M16 rifle lower and upper receivers as well as extension tubes are typically made from 7075-T6 alloy. Desert Tactical Arms, SIG Sauer, and French armament company PGM use it for their precision rifles. It is also commonly used in shafts for lacrosse sticks, such as the STX sabre, and camping knife and fork sets. It is a common material used in competition yo-yos as well.
Due to its high strength, low density, thermal properties, and its ability to be highly polished, 7075 is widely used in mold tool manufacturing. This alloy has been further refined into other 7000 series alloys for this application, namely 7050 and 7020.

To the 7075 aluminum alloy, in addition to the use of daily life, with the continuous improvement of technology, aluminum 7075 is also began to use in important transportation areas, such as aerospace structure materials, at the present, it has entered the development of the automotive field. With the rapid development of modern aerospace industry, higher requirements for the comprehensive properties of high-strength aluminum alloys are put forward. At the same time, the development of modern nuclear industry and transportation industry is in urgent need of high performance, light and economic structure materials, aluminum alloy technology has become the trend of the times.

The 7000 series aluminum is the strongest material in aluminum alloy. Especially, 7075 is super hard aluminum this is the main advantages of 7075 aluminum. With 7075-T651 aluminum alloy especially high quality, 7075 aluminum is praised as the best product of aluminum alloy, which has high strength and far better than any soft steel. The 7075 aluminium alloy has good mechanical and anodic reaction. The common product of 7075 aluminum alloy are 7075 aluminum sheet and 7075 aluminum profile. The representative applications are aeronautics and astronautics, mold processing, mechanical equipment and fixture, especially for the manufacture of aircraft structures and other high stress structures requiring high strength and corrosion resistance.

7075 aluminium alloy is a very high strength aerospace aluminium and is commonly used in applications where the strength of the material is critical and where the need for good corrosion resistance is not important.

Offering superior stress corrosion resistance, 7075 provides very high yield and tensile strengths which is dictated by the particular chosen temper.

Key Features:
7075 Aluminium Alloy is used where high strength is critical and where good corrosion resistance is not important. It is classed as a very high strength aluminium aerospace alloy with superior stress corrosion resistance. Depending on the temper, 7075 offers up to 465 MPa yield strength and 540 MPa tensile strength.

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Download 7075 Aluminium Alloy Datasheet
Typical Applications:
Aircraft structures
Gears & shafts
Automotive

Alloy 7075 is a cold finished aluminium with the highest strength of all grades of aluminium alloys. It also has moderate corrosion resistance. Alloy 7075 can be both hard and claer coat anodized.T73 temper offers better stress corrosion cracking resistance than temper T6.Used for Gears, shafts, aircraft aprts, valve parts, low production plastic mould tools, blow moulds for plastic bottles.T6 temper 0-152.4mm diameterT73 temper 153-310mm diameterT73 temper 500mm square
This aluminum plate is made of one of the strongest of the aluminum alloys. Its use parallels that of 2024, with 7075 selected when higher mechanical properties are desired. 7075 aluminum is an aluminum-zinc alloy with 1%-8% zinc in addition to small amounts of magnesium and small quantities of copper and chromium. This alloy is precipitation hardened to very high strength levels. Alloy 7075 is used in airframe structures and other highly stressed components.

This alloy was originally developed in 1936 by the Sumitomo Metal Industries in Japan, which has since merged with Nippon Steel. Japan was in a full-scale wartime mode then and had begun working to develop a lightweight, high strength-to-density ratio aluminum alloy that could be used in build faster and stronger aircraft for its Imperial Navy.

The development of 7075 aluminum was done in secret, and it wasn’t until 1940 that it was used in the production of planes, specifically the Mitsubishi A6M Zero. The Mitsubishi Zero was considered to be the best carrier-based fighter of the time.

This alloy was first used in the United States and other countries in 1943 and also used extensively by the aircraft industry almost immediately. Because of its high strength-to-weight ratio, 7075 was a natural choice for the new generation of aircraft being produced by the Allies in WWII.
Applications of 7075 Aluminum Alloy
7075 is widely used in aerospace, marine and transportation industries. This is because high strength and light weight properties are critical there. In addition to aircraft parts and components. 7075 can be found in high-end bicycles, molding materials for the plastics and tool industries, and even military applications. All of these products and components require the improved thermal properties that the 7075 alloy provides.

Aluminum 7075 is the major alloy in 7000 Series and Zinc is the major alloying element in this series. Aluminum 7075 possesses high static strength and is used in airframe structures and for highly stressed parts. Aluminum 7075 is available in several types of tempers such as T6, T651, T73, T7351 and T76.

T6 temper has the highest strength but lowest toughness and resistance to stress-corrosion cracking. Since toughness decreases with a decrease in temperature, the T6 temper is not generally recommended for cryogenic applications. The T73 temper provides much improved stress-corrosion resistance over T6 temper with a decrease in strength. The T76 temper provides improved exfoliation resistance and limited stress corrosion resistance over T6 temper with some decrease in strength.

Aluminum 7075 alloy is a cold forging alloy, high strength, far better than mild steel. 7075 is one of the most powerful commercial alloy. 7075 aluminum alloy structure, corrosion-resistant effect, for aviation, marine board best. Common corrosion resistance, good mechanical properties and anodic reactions. Fine grain makes deep drilling better and tool wear better.

Applications


Aerospace industry, blow molding (bottle) mold, ultrasonic plastic welding mold, golf head, shoe mold, paper mold, foam molding, waxing mold, template, fixture, machinery and equipment, mold processing, for the production of high-end Aluminum bicycle frame.

7075 aluminum alloy is a cold treated forging alloy with high strength, which is much better than mild steel. 7075 is one of the most powerful alloys commercially available. General corrosion resistance, good mechanical properties and anodic reaction. Fine grains make the deep drilling performance better, the wear resistance of tools is enhanced, and the thread rolling is more different. Zinc is the main alloy element in 7075. Adding magnesium to the alloy containing 3% - 7.5% zinc can form mgzn2 with remarkable strengthening effect, which makes the heat treatment effect of the alloy far better than that of aluminum zinc binary alloy. Increasing the content of zinc and magnesium in the alloy will further improve the tensile strength, but its ability to resist stress corrosion and spalling corrosion will decrease. After heat treatment, it can achieve very high strength characteristics. 7075 materials are generally added with a small amount of copper, chromium and other alloys. 7075-T651 aluminum alloy is particularly top-grade. It is known as the best product of aluminum alloy, with high strength and far better than any mild steel. The alloy has good mechanical properties and anodic reaction. Representative applications include aerospace, mold processing, mechanical equipment, tooling and fixtures, especially for manufacturing aircraft structures and other high stress structures requiring high strength and strong corrosion resistance.