7068 aluminium alloy


7068 aluminium alloy is one of the strongest commercially available aluminium alloys, with a tensile strength comparable to that of some steels. 7068-T6511 has typical ultimate tensile strength of versus a similar product produced from 7075-T6511 that would have a typical ultimate tensile strength of. Typical yield strength for alloy 7068-T6511 is versus for a similar product produced from 7075-T6511. Strength allowables for this alloy are provided in Metallic Materials Properties Development and Standardization for design.
The main alloying elements are zinc, magnesium, copper and zirconium, with traces of silicon, iron, manganese, chromium, and titanium.

Technical Description

7068 alloy is a 7000 series aluminium-zinc alloy registered with the US Aluminium Association and produced to AMS 4331 and AMS 2772. 7068 alloy ‘A’ and ‘B’ tensile data and fatigue properties have been ratified for inclusion in MIL Handbook 5 / MMPDS.

Uses

Primarily developed for ordnance applications, alloy 7068 is now being used or considered for markets like the aerospace and automotive industries, medical devices, such as prosthetic limbs, as well as recreational products like bicycles and mountain-climbing equipment.

Standard specifications

Standard specifications for AL 7068 include: