2091 aluminium alloy

2091 aluminium has chromium, copper, iron, lithium, magnesium as minor alloying elements.[1]

Chemical composition

Element[1] Value
Aluminum 91.9 - 95.4%
Chromium ≤ 0.10%
Copper 1.8 - 2.5%
Iron ≤ 0.30%
Lithium 1.7 - 2.3%
Magnesium 1.1 - 1.9%
Manganese ≤ 0.10%
Other, each ≤ 0.05%
Other, total ≤ 0.15%
Silicon ≤ 0.20%
Titanium ≤<= 0.10%
Zinc ≤ 0.25%
Zirconium 0.04 - 0.16%

Properties

Properties[1] Value
Density 2.58 g/cc
Tensile Strength, Ultimate 430 MPa
Tensile Strength, Yield 330 MPa
Elongation at Break 18 %
Modulus of Elasticity 75.0 GPa
CTE, linear 23.9 μm/m-°C

@Temperature 20.0 - 100 °C

Specific Heat Capacity 0.860 J/g-°C

at Temperature 100 °C

Thermal Conductivity 84.0 W/m-K
Melting Point 560 - 670 °C
Solidus 560 °C
Liquidus 670 °C

Aluminium alloy table

References

  1. ^ a b c "2091 ALuminium alloy". Archived from the original on 2021-01-22.


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