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What’s up guys?!?!?! This is Michael with Michael Talks Metal. Aluminum you say? Why yes, today we ARE talking about Aluminum. So glad you asked.

Our next aluminum alloy commonly used in aerospace applications is 7075.

7075 is the highest strength aluminum alloy of our series. It is available in all common mill products and several tempers.

If you would like to review the temper designations….. click here

The combination of high strength and fair machinability make it ideal for many aerospace and ordnance applications.  In the various T7xxx stress corrosion and exfoliation resistant tempers it is often specified in place of 2024, 2014, or 2017.

Its UNS designation is UNS A97075.

7075 ChemistryUNS A97075
Silicon0.40 % Max
Iron0.50 % Max
Copper1.20 – 2.00 %
Manganese0.30 % Max
Magnesium2.10 – 2.90 %
Chromium0.18 – 0.28 %
Zinc5.10 – 6.10 %
Titanium0.20 % Max
Other0.05 % Each & 0.15% Total


Density        .101 lbs per cubic inch

Mean Coefficient of Thermal Expansion from room temperature to 212 deg F:

13.0 microinch per inch per deg F

Comparative Characteristics can be used to evaluate different alloys and tempers of Aluminum. Ratings are in decreasing order of merit.


T6xx Tempers:

C for General Corrosion Resistance

C for Machinability

B for Anodizing Response

C for Stress Corrosion

T7xx Tempers:

C for General Corrosion

C for Machinability

B for Anodizing Response

B for Stress Corrosion

We have a lot of AMS specifications for you today. Each AMS is for a specific product and the listed temper , so here goes…and that’s it! Wow that was fast…head to the website, link in the description to take a closer look at those specs….

Common AMS Specifications: product and temper:

AMS 4045Sheet, Plate7075T6 – T651
AMS 4078Plate7075T7351
AMS 4154Extruded Bars, Rods, Wire, Shapes, Tubing7075T6
AMS 4166Extruded Bars, Rods, Wire, Shapes, Tubing7075T73
AMS 4167Extruded Bars, Rods, Wire, Shapes, Tubing7075T73511
AMS 4168Extruded Bars, Rods, Wire, Shapes, Tubing7075T76510
AMS 4169Extruded Bars, Rods, Wire, Shapes, Tubing7075T76511
AMS 4122Extruded Bars, Rods, Wire, Shapes, Tubing7075T6
AMS 4123Cold Finished Bars, Rods7075T651
AMS 4124Cold Finished Bars, Rods7075T7351

Commercial specifications are too numerous for us to detail here.

Additional specifications and part requirements can alter what we have shown you here today.

SO CHECK THE SPECS !!!!!!!!!!!

Visit us at our website …… www.michlinmetals.com