7005 aluminium alloy

7005 is an aluminium alloy used bicycle frames, due to its relative ease of welding it does not require expensive heat treating - it is however harder to form making manufacture more challenging.

It has an Ultimate Tensile Strength of 350MPa, a Fatigue Strength of 150MPa and a density of 2.78g/cm³ [1] compared to a Ultimate Tensile Strength of 310MPa and Fatigue Strength of 96.5 MPa and a density of 2.70g/cm³ for 6061 aluminium alloy. [2]

It does not need to be precipitation hardened, unlike 6061, but can be cooled in air.[3]

Specific forms of AL 7005 include:

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

[4]

Chemical composition

The alloy composition of 7005 is:

[5]

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References

  1. "matweb Aluminium 7005".
  2. "matweb Aluminium 6061-T6".
  3. Davis, Joseph R. (1993). Aluminum and Aluminum Alloys. ASM International. ISBN 9780871704962.
  4. "Make it From". Make it From. Archived from the original on 2015-11-09.
  5. "Archived copy". Archived from the original on 2014-04-27. Retrieved 2012-08-26.CS1 maint: archived copy as title (link)
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