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8090-T651 Aluminum

8090-T651 aluminum is 8090 aluminum in the T651 temper. To achieve this temper, the metal is solution heat-treated, stress relieved, then artificially aged. The stress relief is accomplished by stretching the metal by an amount that depends on the type of standard wrought product being made (sheet, plate, bar, or forging).

The graph bars on the material properties cards below compare 8090-T651 aluminum to: otherwise unclassified aluminums (top), all aluminum alloys (middle), and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it's 50% of the highest, and so on.

Mechanical Properties

Elastic (Young's, Tensile) Modulus

67 GPa 9.8 x 106 psi

Elongation at Break

3.5 %

Fatigue Strength

130 MPa 19 x 103 psi

Fracture Toughness

24 MPa-m1/2 22 x 103 psi-in1/2

Poisson's Ratio

0.33

Shear Modulus

25 GPa 3.7 x 106 psi

Tensile Strength: Ultimate (UTS)

470 MPa 68 x 103 psi

Tensile Strength: Yield (Proof)

400 MPa 57 x 103 psi

Thermal Properties

Latent Heat of Fusion

400 J/g

Maximum Temperature: Mechanical

190 °C 380 °F

Melting Completion (Liquidus)

660 °C 1210 °F

Melting Onset (Solidus)

600 °C 1110 °F

Specific Heat Capacity

960 J/kg-K 0.23 BTU/lb-°F

Thermal Conductivity

95 W/m-K 55 BTU/h-ft-°F

Thermal Expansion

24 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

20 % IACS

Electrical Conductivity: Equal Weight (Specific)

66 % IACS

Otherwise Unclassified Properties

Base Metal Price

18 % relative

Density

2.7 g/cm3 170 lb/ft3

Embodied Carbon

8.6 kg CO2/kg material

Embodied Energy

170 MJ/kg 72 x 103 BTU/lb

Embodied Water

1160 L/kg 140 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

16 MJ/m3

Resilience: Unit (Modulus of Resilience)

1160 kJ/m3

Stiffness to Weight: Axial

14 points

Stiffness to Weight: Bending

50 points

Strength to Weight: Axial

47 points

Strength to Weight: Bending

49 points

Thermal Diffusivity

36 mm2/s

Thermal Shock Resistance

21 points

Alloy Composition

Aluminum (Al)Al 93 to 98.4
Lithium (Li)Li 2.2 to 2.7
Copper (Cu)Cu 1.0 to 1.6
Magnesium (Mg)Mg 0.6 to 1.3
Iron (Fe)Fe 0 to 0.3
Zinc (Zn)Zn 0 to 0.25
Silicon (Si)Si 0 to 0.2
Zirconium (Zr)Zr 0.040 to 0.16
Manganese (Mn)Mn 0 to 0.1
Chromium (Cr)Cr 0 to 0.1
Titanium (Ti)Ti 0 to 0.1
Residualsres. 0 to 0.15

All values are % weight. Ranges represent what is permitted under applicable standards.

Followup Questions

Further Reading

Aluminum-Lithium Alloys: Processing, Properties, and Applications, N. Eswara Prasad et al. (editors), 2013

EN 573-3: Aluminium and aluminium alloys. Chemical composition and form of wrought products. Chemical composition and form of products

Properties and Selection: Nonferrous Alloys and Special-Purpose Materials, ASM Handbook vol. 2, ASM International, 1993