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.
| Al | 87.3 to 89.4 | |
| Si | 8.6 to 9.4 | |
| Cu | 1.6 to 2.0 | |
| Mg | 0.4 to 0.6 | |
| Fe | 0 to 0.2 | |
| Ti | 0 to 0.2 | |
| Mn | 0 to 0.1 | |
| Zn | 0 to 0.1 | |
| res. | 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