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7022-T6511 Aluminum

7022-T6511 aluminum is 7022 aluminum in the T6511 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 (extrusion or tube). The metal is straightened after the stretching operation. This temper is closely related to T6510, which does not permit such straightening.

The graph bars on the material properties cards below compare 7022-T6511 aluminum to: 7000-series alloys (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

70 GPa 10 x 106 psi

Elongation at Break

7.8 %

Fatigue Strength

170 MPa 24 x 103 psi

Poisson's Ratio

0.32

Shear Modulus

26 GPa 3.8 x 106 psi

Shear Strength

310 MPa 45 x 103 psi

Tensile Strength: Ultimate (UTS)

530 MPa 76 x 103 psi

Tensile Strength: Yield (Proof)

460 MPa 66 x 103 psi

Thermal Properties

Latent Heat of Fusion

380 J/g

Maximum Temperature: Mechanical

200 °C 390 °F

Melting Completion (Liquidus)

640 °C 1180 °F

Melting Onset (Solidus)

480 °C 890 °F

Specific Heat Capacity

870 J/kg-K 0.21 BTU/lb-°F

Thermal Conductivity

140 W/m-K 80 BTU/h-ft-°F

Thermal Expansion

24 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

21 % IACS

Electrical Conductivity: Equal Weight (Specific)

65 % IACS

Otherwise Unclassified Properties

Base Metal Price

10 % relative

Density

2.9 g/cm3 180 lb/ft3

Embodied Carbon

8.5 kg CO2/kg material

Embodied Energy

150 MJ/kg 65 x 103 BTU/lb

Embodied Water

1130 L/kg 140 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

39 MJ/m3

Resilience: Unit (Modulus of Resilience)

1500 kJ/m3

Stiffness to Weight: Axial

13 points

Stiffness to Weight: Bending

47 points

Strength to Weight: Axial

50 points

Strength to Weight: Bending

49 points

Thermal Diffusivity

54 mm2/s

Thermal Shock Resistance

23 points

Alloy Composition

Aluminum (Al)Al 87.9 to 92.4
Zinc (Zn)Zn 4.3 to 5.2
Magnesium (Mg)Mg 2.6 to 3.7
Copper (Cu)Cu 0.5 to 1.0
Manganese (Mn)Mn 0.1 to 0.4
Silicon (Si)Si 0 to 0.5
Iron (Fe)Fe 0 to 0.5
Chromium (Cr)Cr 0.1 to 0.3
Titanium (Ti)Ti 0 to 0.2
Zirconium (Zr)Zr 0 to 0.2
Residualsres. 0 to 0.15

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

Followup Questions

Further Reading

EN 755-2: Aluminium and aluminium alloys. Extruded rod/bar, tube and profiles. Mechanical properties

ASM Specialty Handbook: Aluminum and Aluminum Alloys, J. R. Davis (editor), 1993

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

CRC Materials Science and Engineering Handbook, 4th ed., James F. Shackelford et al. (editors), 2015