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332.0 (332.0-T5, formerly F332.0, LM26, SC103A, A03320) Cast Aluminum

332.0 aluminum is an aluminum alloy formulated for casting. Cited properties are appropriate for the T5 temper. To achieve this temper, the metal is artificially aged until it meets standard mechanical property requirements. 332.0 is the Aluminum Association (AA) designation for this material. 332 is the SAE designation. LM26 is the British Standard (BS) designation. A03320 is the UNS number. Additionally, the AFNOR (French) designation is A-S7U3G. Older literature may refer to this material as F332.0 or ASTM SC103A.

The graph bars on the material properties cards below compare 332.0 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

110

Elastic (Young's, Tensile) Modulus

73 GPa 11 x 106 psi

Elongation at Break

1.0 %

Fatigue Strength

90 MPa 13 x 103 psi

Poisson's Ratio

0.33

Shear Modulus

27 GPa 4.0 x 106 psi

Shear Strength

190 MPa 28 x 103 psi

Tensile Strength: Ultimate (UTS)

250 MPa 36 x 103 psi

Tensile Strength: Yield (Proof)

190 MPa 28 x 103 psi

Thermal Properties

Latent Heat of Fusion

530 J/g

Maximum Temperature: Mechanical

170 °C 340 °F

Melting Completion (Liquidus)

580 °C 1080 °F

Melting Onset (Solidus)

530 °C 990 °F

Specific Heat Capacity

880 J/kg-K 0.21 BTU/lb-°F

Thermal Conductivity

100 W/m-K 60 BTU/h-ft-°F

Thermal Expansion

21 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

26 % IACS

Electrical Conductivity: Equal Weight (Specific)

84 % IACS

Otherwise Unclassified Properties

Base Metal Price

10 % relative

Density

2.8 g/cm3 170 lb/ft3

Embodied Carbon

7.8 kg CO2/kg material

Embodied Energy

140 MJ/kg 61 x 103 BTU/lb

Embodied Water

1040 L/kg 120 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

2.3 MJ/m3

Resilience: Unit (Modulus of Resilience)

250 kJ/m3

Stiffness to Weight: Axial

15 points

Stiffness to Weight: Bending

50 points

Strength to Weight: Axial

24 points

Strength to Weight: Bending

31 points

Thermal Diffusivity

42 mm2/s

Thermal Shock Resistance

12 points

Alloy Composition

Among cast aluminum alloys, the composition of 332.0 aluminum is notable for containing comparatively high amounts of silicon (Si) and copper (Cu). Silicon is used to improve casting fluidity and lower melting temperature. It also has a strengthening effect. Copper is used to improve strength. This comes at the cost of a decrease in corrosion resistance and weldability.

Aluminum (Al) 80.1 to 89
Silicon (Si) 8.5 to 10.5
Copper (Cu) 2.0 to 4.0
Magnesium (Mg) 0.5 to 1.5
Iron (Fe) 0 to 1.2
Zinc (Zn) 0 to 1.0
Manganese (Mn) 0 to 0.5
Nickel (Ni) 0 to 0.5
Titanium (Ti) 0 to 0.25
Residuals 0 to 0.5

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

Followup Questions

Similar Alloys

Further Reading

ASTM B108: Standard Specification for Aluminum-Alloy Permanent Mold Castings

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