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354.0 (SC92A, A03540) Cast Aluminum

354.0 aluminum is an aluminum alloy formulated for casting. 354.0 is the Aluminum Association (AA) designation for this material. A03540 is the UNS number. Older literature may refer to this material as ASTM SC92A, but this is now discouraged. This material originally entered the market in 1961.

The properties of 354.0 aluminum include two common variations. This page shows summary ranges across both of them. For more specific values, follow the links immediately below. The graph bars on the material properties cards further below compare 354.0 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

Elastic (Young's, Tensile) Modulus

71 GPa 10 x 106 psi

Elongation at Break

2.4 to 3.0 %

Fatigue Strength

92 to 120 MPa 13 to 17 x 103 psi

Poisson's Ratio

0.33

Shear Modulus

27 GPa 3.9 x 106 psi

Tensile Strength: Ultimate (UTS)

360 to 380 MPa 52 to 55 x 103 psi

Tensile Strength: Yield (Proof)

280 to 310 MPa 40 to 45 x 103 psi

Thermal Properties

Latent Heat of Fusion

530 J/g

Maximum Temperature: Mechanical

170 °C 340 °F

Melting Completion (Liquidus)

600 °C 1110 °F

Melting Onset (Solidus)

550 °C 1030 °F

Specific Heat Capacity

900 J/kg-K 0.21 BTU/lb-°F

Thermal Conductivity

130 W/m-K 72 BTU/h-ft-°F

Thermal Expansion

21 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

32 % IACS

Electrical Conductivity: Equal Weight (Specific)

110 % IACS

Otherwise Unclassified Properties

Base Metal Price

9.5 % relative

Density

2.7 g/cm3 170 lb/ft3

Embodied Carbon

7.8 kg CO2/kg material

Embodied Energy

150 MJ/kg 63 x 103 BTU/lb

Embodied Water

1070 L/kg 130 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

8.6 to 9.8 MJ/m3

Resilience: Unit (Modulus of Resilience)

540 to 670 kJ/m3

Stiffness to Weight: Axial

15 points

Stiffness to Weight: Bending

52 points

Strength to Weight: Axial

37 to 39 points

Strength to Weight: Bending

42 to 44 points

Thermal Diffusivity

52 mm2/s

Thermal Shock Resistance

17 to 18 points

Alloy Composition

Among cast aluminum alloys, the composition of 354.0 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) 87.3 to 89.4
Silicon (Si) 8.6 to 9.4
Copper (Cu) 1.6 to 2.0
Magnesium (Mg) 0.4 to 0.6
Iron (Fe) 0 to 0.2
Titanium (Ti) 0 to 0.2
Manganese (Mn) 0 to 0.1
Zinc (Zn) 0 to 0.1
Residuals 0 to 0.15

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

Followup Questions

Similar Alloys

Further Reading

ASTM B686: Standard Specification for Aluminum Alloy Castings, High-Strength

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

Aluminum: Properties and Physical Metallurgy, John E. Hatch (editor), 1984

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