7005 aluminium alloy

Wrought aluminium zinc alloy From Wikipedia, the free encyclopedia

7005 is an aluminium wrought alloy[1] used in 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.[2] It has an Ultimate Tensile Strength of 350 MPa, a Fatigue Strength of 150 MPa and a density of 2.78 g/cm3.[3] It does not need to be precipitation hardened, but can be cooled in air.[4]

Bicycle frame made out of aluminium alloy

Specific forms of AL 7005 include

  1. 7005-O
  2. 7005-T5
  3. 7005-T53
  4. 7005-T6[5]

Chemical composition

The alloy composition of 7005 is:[6]

More information No, Element ...
7005 Aluminum alloy
No Element Percentage
1 Aluminium 91.0% - 94.7%
2 Chromium 0.06% - 0.20%
3 Copper <=0.10 %
4 Iron <=0.40 %
5 Magnesium 1.0% - 1.80%
6 Manganese 0.20% - 0.70%
7 Silicon <=0.35%
8 Titanium 0.010% - 0.060%
9 Zinc 4.0% - 5.0%
10 Zirconium 0.080% - 0.20%
11 Other, total <= 0.15%
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Properties

More information No, Property ...
No Property Value
1 Density 2.78 g/cm3
2 Elastic modulus[1] 70-80 GPa
3 Poisson Ratio[1] 0.33
4 Thermal conductivity[1] 166 W/mK
5 Ultimate Tensile Strength[1] 350 MPa
6 Fatigue Strength[1] 150 MPa
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Further reading

References

Aluminum alloy table

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