Global Information7068 aluminium alloy information
7068 aluminium alloy is one of the strongest commercially available aluminium alloys, with a tensile strength comparable to that of some steels. This material, also known as an aircraft alloy, is heat treatable.[1]
7068-T6511 has typical ultimate tensile strength of 710 MPa (103 ksi) versus a similar product produced from 7075-T6511 that would have a typical ultimate tensile strength of 640 MPa (93 ksi). Typical yield strength for alloy 7068-T6511 is 683 MPa (99.1 ksi) versus 590 MPa (86 ksi) for a similar product produced from 7075-T6511.[2] Strength allowables for this alloy are provided in Metallic Materials Properties Development and Standardization for design.[3]
The main alloying elements are zinc (7.3 to 8.3%), magnesium (2.2 to 3.0%), copper (1.6 to 2.4%) and zirconium (0.05 to 0.15%), with traces of silicon, iron, manganese, chromium, and titanium.[4]
- ^ "Air craft alloy". Archived from the original on 2020-08-12.
- ^ "Kaiser Aluminium Alloy 7068" (PDF). Archived from the original (PDF) on 2014-10-21. Retrieved 2015-01-12.
- ^ MMPDS
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