7005 aluminium alloy

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7005 is an aluminium alloy used primarily for less expensive bicycle frames, due to its relative ease of welding and manufacture, it does not require expensive heat treating. It has similar physical properties to 6061 aluminium alloy, except it has a higher density of 2.78 g/cm³ (as opposed to 2.70 g/cm³ or ≈ +3%), and depending on the temper, may be slightly stronger.

It does not need to be precipitation hardened, unlike 6061, but can be cooled in air.[1]

Specific forms of AL 7005 include:

  • 7005-O
  • 7005-T5
  • 7005-T53
  • 7005-T6


Chemical composition[edit]

The alloy composition of 7005 is:



  1. ^ Davis, Joseph R. (1993). Aluminum and Aluminum Alloys. ASM International. ISBN 9780871704962.
  2. ^ "Make it From". Make it From. Archived from the original on 2015-11-09.
  3. ^ "Archived copy". Archived from the original on 2014-04-27. Retrieved 2012-08-26.