2090 Aluminium alloy consists of copper, lithium, zirconium as minor elements and other impurity alloying elements.
Chemical composition ElementWeight Percentage (%)Aluminum93.2 - 95.6Copper2.4 - 3Lithium1.9 - 2.6Magnesium≤ 0.25Titanium≤ 0.15Iron≤ 0.12Zinc≤ 0.10Silicon≤ 0.10Zirconium0.080 - 0.15Manganese≤ 0.050Chromium≤ 0.050Other (each)≤ 0.050Other (total)≤ 0.15
Physical properties PropertiesValuesDensity2.59 g/cm3Melting point560 - 650 °C
Mechanical properties PropertiesValuesTensile strength550 MPaYield strength520 MPaElongation at break6%Poisson's ratio0.34Elastic modulus76 GPa
Thermal properties Thermal PropertiesMetricCTE, linear 23.6 μm/m-°C at Temperature 20.0 - 100 °CSpecific Heat Capacity 1.203 J/g-°C at Temperature 100 °CThermal Conductivity 88.0 W/m-KMelting Point 560 - 650 °CSolidus 560 °CLiquidus 650 °C
Applications Aluminium 2090 alloy is used in aircraft components. Aircraft floor bulkhead stiffeners Wing leading and trailing edges Fuselage bulkhead webs
Aluminium alloy table
References