2090 aluminium alloy

Summary

2090 Aluminium alloy consists of copper, lithium, zirconium as minor elements and other impurity alloying elements.[1]

Chemical composition

Element [1] Weight Percentage (%)
Aluminum 93.2 - 95.6
Copper 2.4 - 3
Lithium 1.9 - 2.6
Magnesium ≤ 0.25
Titanium ≤ 0.15
Iron ≤ 0.12
Zinc ≤ 0.10
Silicon ≤ 0.10
Zirconium 0.080 - 0.15
Manganese ≤ 0.050
Chromium ≤ 0.050
Other (each) ≤ 0.050
Other (total) ≤ 0.15

Physical properties

Properties [1] Values
Density 2.59 g/cm³
Melting point 560 - 650 °C

Mechanical properties

Properties [1] Values
Tensile strength 550 MPa
Yield strength 520 MPa
Elongation at break 6%
Poisson's ratio 0.34
Elastic modulus 76 GPa

Thermal properties

Thermal Properties [2] Metric
CTE, linear 23.6 µm/m-°C

at Temperature 20.0 - 100 °C

Specific Heat Capacity 1.203 J/g-°C

at Temperature 100 °C

Thermal Conductivity 88.0 W/m-K
Melting Point 560 - 650 °C
Solidus 560 °C
Liquidus 650 °C

Applications

Aluminium 2090 alloy is used in aircraft components.[1]

  • Aircraft floor bulkhead stiffeners
  • Wing leading and trailing edges
  • Fuselage bulkhead webs

Aluminium alloy table

References

  1. ^ a b c d e "2090 Aluminium alloy properties".
  2. ^ "2090 Aluminium alloy properties".