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6066-T42 Aluminum

6066-T42 aluminum is 6066 aluminum in the T42 temper. To achieve this temper, the metal is solution heat-treated and naturally aged. Unlike T4 temper, this is done by the receiver rather than the supplier.

The graph bars on the material properties cards below compare 6066-T42 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

70 GPa 10 x 106 psi

Elongation at Break

13 %

Fatigue Strength

94 MPa 14 x 103 psi

Poisson's Ratio

0.33

Shear Modulus

26 GPa 3.8 x 106 psi

Shear Strength

190 MPa 27 x 103 psi

Tensile Strength: Ultimate (UTS)

310 MPa 45 x 103 psi

Tensile Strength: Yield (Proof)

190 MPa 27 x 103 psi

Thermal Properties

Latent Heat of Fusion

410 J/g

Maximum Temperature: Mechanical

170 °C 330 °F

Melting Completion (Liquidus)

650 °C 1190 °F

Melting Onset (Solidus)

560 °C 1040 °F

Specific Heat Capacity

890 J/kg-K 0.21 BTU/lb-°F

Thermal Conductivity

150 W/m-K 88 BTU/h-ft-°F

Thermal Expansion

23 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

40 % IACS

Electrical Conductivity: Equal Weight (Specific)

130 % IACS

Otherwise Unclassified Properties

Base Metal Price

9.5 % relative

Density

2.8 g/cm3 170 lb/ft3

Embodied Carbon

8.3 kg CO2/kg material

Embodied Energy

150 MJ/kg 65 x 103 BTU/lb

Embodied Water

1160 L/kg 140 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

36 MJ/m3

Resilience: Unit (Modulus of Resilience)

250 kJ/m3

Stiffness to Weight: Axial

14 points

Stiffness to Weight: Bending

49 points

Strength to Weight: Axial

31 points

Strength to Weight: Bending

36 points

Thermal Diffusivity

61 mm2/s

Thermal Shock Resistance

13 points

Alloy Composition

Aluminum (Al)Al 93 to 97
Silicon (Si)Si 0.9 to 1.8
Magnesium (Mg)Mg 0.8 to 1.4
Copper (Cu)Cu 0.7 to 1.2
Manganese (Mn)Mn 0.6 to 1.1
Iron (Fe)Fe 0 to 0.5
Chromium (Cr)Cr 0 to 0.4
Zinc (Zn)Zn 0 to 0.25
Titanium (Ti)Ti 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

ASTM B221: Standard Specification for Aluminum and Aluminum-Alloy Extruded Bars, Rods, Wire, Profiles, and Tubes

Handbook of Aluminum Bonding Technology and Data, J. D. Minford, 1993

Aluminum Standards and Data, Aluminum Association Inc., 2013