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772.0-F Cast Aluminum

772.0-F aluminum is 772.0 aluminum in the as-fabricated (no temper or treatment) condition. The graph bars on the material properties cards below compare 772.0-F aluminum to: ANSI/AA cast 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

69 GPa 10 x 106 psi

Elongation at Break

6.3 %

Fatigue Strength

160 MPa 24 x 103 psi

Poisson's Ratio

0.32

Shear Modulus

26 GPa 3.8 x 106 psi

Tensile Strength: Ultimate (UTS)

260 MPa 38 x 103 psi

Tensile Strength: Yield (Proof)

220 MPa 32 x 103 psi

Thermal Properties

Latent Heat of Fusion

380 J/g

Maximum Temperature: Mechanical

180 °C 350 °F

Melting Completion (Liquidus)

630 °C 1160 °F

Melting Onset (Solidus)

580 °C 1080 °F

Specific Heat Capacity

870 J/kg-K 0.21 BTU/lb-°F

Thermal Conductivity

150 W/m-K 87 BTU/h-ft-°F

Thermal Expansion

24 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

35 % IACS

Electrical Conductivity: Equal Weight (Specific)

110 % IACS

Otherwise Unclassified Properties

Base Metal Price

9.5 % relative

Density

3.0 g/cm3 180 lb/ft3

Embodied Carbon

8.0 kg CO2/kg material

Embodied Energy

150 MJ/kg 64 x 103 BTU/lb

Embodied Water

1140 L/kg 140 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

16 MJ/m3

Resilience: Unit (Modulus of Resilience)

350 kJ/m3

Stiffness to Weight: Axial

13 points

Stiffness to Weight: Bending

46 points

Strength to Weight: Axial

25 points

Strength to Weight: Bending

31 points

Thermal Diffusivity

58 mm2/s

Thermal Shock Resistance

11 points

Alloy Composition

Aluminum (Al)Al 91.2 to 93.2
Zinc (Zn)Zn 6.0 to 7.0
Magnesium (Mg)Mg 0.6 to 0.8
Titanium (Ti)Ti 0.1 to 0.2
Chromium (Cr)Cr 0.060 to 0.2
Silicon (Si)Si 0 to 0.15
Iron (Fe)Fe 0 to 0.15
Manganese (Mn)Mn 0 to 0.1
Copper (Cu)Cu 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

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