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7075 Aluminum Forging

Aluminum 7075 is a zinc, copper, and magnesium containing alloy capable of superior strength and stress corrosion cracking resistance. AL 7075 is an excellent material for use in highly stressed structural applications and is popular in the aerospace, military, and defense spaces. This alloy is also used for many consumer products including keys and bicycle components, and sporting equipment. 

7075 aluminum forging7075 Chemical Composition:



Si: ≤0.4
Fe: ≤0.5
Cu: 1.2-2.0
Mn: ≤0.3
Mg: 2.1-2.9
Cr: 0.18-0.28
Zn: 5.1-6.1
Ti: ≤0.2
Al: Balance

Properties of 7075 Aluminum Forging 



Aluminum 7075 is the major forging alloy in 7000 Series and Zinc is the major alloying element in this series. Aluminum 7075 forgings possess high static strength and is used in airframe structures and for highly stressed parts. Aluminum 7075 forging 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.

Applications for 7075 Aluminum Forgings 



Commonly used in the manufacture of aircraft and other aerospace applications not requiring the corrosion resistance.

6061 VS 7075 Aluminum Forging



When it comes to the using of 6061 aluminum alloy or 7075 aluminum alloy for a forging project, understanding their differences and application ranges can go a long way and save you the trouble when looking to balance performance with cost. For most general purposes, both alloys may be able to get the job done but the differences in composition, mechanical properties and cost between both alloys can help you determine which of the two is the best choice for your forging needs. 

6061 aluminum forging contains less zinc than its 7075 counterpart, meaning that while 6061 alloys provide superior workability over other alloys, it doesn’t boast the same high strength and stress resistance as 7075 aluminum forging.

General Mechanical Properties of 6061 Aluminum Forging
Tensile Strength – 45,000 psi
Yield Point – 40,000 psi
Brinell Hardness – 95
Elongation at Break – 12%
Shear Strength – 31,000 psi
Thermal Conductivity – 170 W/m-K
Strength to Weight Ratio: 115 kN-m/kg

General Mechanical Properties of 7075 Aluminum Forging
Tensile Strength – 83,000 psi
Yield Point – 74,000 psi
Brinell Hardness – 150
Elongation at Break – 10%
Shear Strength – 48,000 psi
Thermal Conductivity – 130 W/m-K
Strength to Weight Ratio: 196 kN-m/kg

When looking to compare 6061 versus 7075 aluminum forging, 6061 is considered by many to be highly versatile for a wide variety of general purpose mechanical applications. 7075 is one of the strongest aluminum alloys available and while its increased cost and tougher workability may come across as obstacles, 7075 alloys are worth their price tag when it comes to applications in which its increased strength and toughness are crucial. Contact us now if you need a good aluminum forging company from China.

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