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328.0-F Cast Aluminum

328.0-F aluminum is 328.0 aluminum in the as-fabricated (no temper or treatment) condition. The graph bars on the material properties cards below compare 328.0-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

Brinell Hardness

60

Elastic (Young's, Tensile) Modulus

72 GPa 10 x 106 psi

Elongation at Break

1.6 %

Fatigue Strength

80 MPa 12 x 103 psi

Poisson's Ratio

0.33

Shear Modulus

27 GPa 3.9 x 106 psi

Tensile Strength: Ultimate (UTS)

200 MPa 29 x 103 psi

Tensile Strength: Yield (Proof)

120 MPa 17 x 103 psi

Thermal Properties

Latent Heat of Fusion

510 J/g

Maximum Temperature: Mechanical

180 °C 350 °F

Melting Completion (Liquidus)

620 °C 1140 °F

Melting Onset (Solidus)

560 °C 1050 °F

Solidification (Pattern Maker's) Shrinkage

1.3 %

Specific Heat Capacity

890 J/kg-K 0.21 BTU/lb-°F

Thermal Conductivity

120 W/m-K 70 BTU/h-ft-°F

Thermal Expansion

22 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

30 % IACS

Electrical Conductivity: Equal Weight (Specific)

99 % IACS

Otherwise Unclassified Properties

Base Metal Price

10 % relative

Density

2.7 g/cm3 170 lb/ft3

Embodied Carbon

7.8 kg CO2/kg material

Embodied Energy

140 MJ/kg 62 x 103 BTU/lb

Embodied Water

1070 L/kg 130 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

2.8 MJ/m3

Resilience: Unit (Modulus of Resilience)

92 kJ/m3

Stiffness to Weight: Axial

15 points

Stiffness to Weight: Bending

51 points

Strength to Weight: Axial

21 points

Strength to Weight: Bending

28 points

Thermal Diffusivity

50 mm2/s

Thermal Shock Resistance

9.2 points

Alloy Composition

Aluminum (Al)Al 84.5 to 91.1
Silicon (Si)Si 7.5 to 8.5
Copper (Cu)Cu 1.0 to 2.0
Zinc (Zn)Zn 0 to 1.5
Iron (Fe)Fe 0 to 1.0
Manganese (Mn)Mn 0.2 to 0.6
Magnesium (Mg)Mg 0.2 to 0.6
Chromium (Cr)Cr 0 to 0.35
Nickel (Ni)Ni 0 to 0.25
Titanium (Ti)Ti 0 to 0.25
Residualsres. 0 to 0.5

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

Followup Questions

Further Reading

ASTM B618: Standard Specification for Aluminum-Alloy Investment Castings

ASTM B26: Standard Specification for Aluminum-Alloy Sand Castings

Iron in Aluminium Alloys: Impurity and Alloying Element, N. A. Belov et al., 2002

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