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Wrought aluminum-lithium alloy 8090

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Wrought aluminum-lithium alloy 8090
Chemical composition: Li=2.4%, Cu=1.9%, Mg=0.9%, Zr=0.1%, Al balance
Property Value in metric unit Value in US unit
Density 2.54 *10³ kg/m³ 159 lb/ft³
Modulus of elasticity 77 GPa 11200 ksi
Thermal expansion (20 ºC) 21.4*10-6 ºCˉ¹ 11.9*10-6 in/(in* ºF)
Specific heat capacity 930 J/(kg*K) 0.222 BTU/(lb*ºF)
Thermal conductivity 95.3 W/(m*K) 661 BTU*in/(hr*ft²*ºF)
Tensile strength (T3) 340 MPa 49300 psi
Yield strength (T3) 210 MPa 30500 psi
Elongation T(3) 13 % 13 %
Shear strength (T3) 200 MPa 29000 psi
Hardness (T3) 91 HB 91 HB
Tensile strength (T8x) 490 MPa 71100 psi
Yield strength (T8x) 430 MPa 62400 psi
Elongation (T8x) 9 % 9 %
Shear strength (T8x) 290 MPa 42100 psi
Fracture toughness (T8x) 75 MPa*m½ 68.3 ksi*in½
Hardness (T8x) 130 HB 130 HB

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