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6063A-O Aluminum

6063A-O aluminum is 6063A aluminum in the annealed condition. It has the lowest strength and highest ductility compared to the other variants of 6063A aluminum. The graph bars on the material properties cards below compare 6063A-O aluminum to: 6000-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

68 GPa 9.9 x 106 psi

Elongation at Break

18 %

Fatigue Strength

58 MPa 8.4 x 103 psi

Poisson's Ratio

0.33

Shear Modulus

26 GPa 3.7 x 106 psi

Shear Strength

78 MPa 11 x 103 psi

Tensile Strength: Ultimate (UTS)

130 MPa 18 x 103 psi

Tensile Strength: Yield (Proof)

55 MPa 7.9 x 103 psi

Thermal Properties

Latent Heat of Fusion

400 J/g

Maximum Temperature: Mechanical

160 °C 320 °F

Melting Completion (Liquidus)

640 °C 1190 °F

Melting Onset (Solidus)

620 °C 1160 °F

Specific Heat Capacity

900 J/kg-K 0.22 BTU/lb-°F

Thermal Conductivity

200 W/m-K 120 BTU/h-ft-°F

Thermal Expansion

23 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

53 % IACS

Electrical Conductivity: Equal Weight (Specific)

180 % IACS

Otherwise Unclassified Properties

Base Metal Price

9.5 % relative

Density

2.7 g/cm3 170 lb/ft3

Embodied Carbon

8.3 kg CO2/kg material

Embodied Energy

150 MJ/kg 66 x 103 BTU/lb

Embodied Water

1190 L/kg 140 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

18 MJ/m3

Resilience: Unit (Modulus of Resilience)

22 kJ/m3

Stiffness to Weight: Axial

14 points

Stiffness to Weight: Bending

50 points

Strength to Weight: Axial

13 points

Strength to Weight: Bending

21 points

Thermal Diffusivity

83 mm2/s

Thermal Shock Resistance

5.6 points

Alloy Composition

Aluminum (Al) 97.5 to 99
Magnesium (Mg) 0.6 to 0.9
Silicon (Si) 0.3 to 0.6
Iron (Fe) 0.15 to 0.35
Manganese (Mn) 0 to 0.15
Zinc (Zn) 0 to 0.15
Titanium (Ti) 0 to 0.1
Copper (Cu) 0 to 0.1
Chromium (Cr) 0 to 0.050
Residuals 0 to 0.15

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

Followup Questions

Further Reading

EN 754-2: Aluminium and aluminium alloys. Cold drawn rod/bar and tube. Mechanical properties

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

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

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