EN AC-48000 (AISi12CuNiMg) Cast Aluminum
EN AC-48000 aluminum is an aluminum alloy formulated for casting. 48000 is the EN numeric designation for this material. AISi12CuNiMg is the EN chemical designation. It has a fairly low ductility among the Euronorm (EN) cast aluminums in the database.
The properties of EN AC-48000 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 EN AC-48000 aluminum to: Euronorm (EN) 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
100 to 110
Elastic (Young's, Tensile) Modulus
73 GPa 11 x 106 psi
Elongation at Break
1.0 %
Fatigue Strength
85 to 86 MPa 12 to 13 x 103 psi
Poisson's Ratio
0.33
Shear Modulus
28 GPa 4.0 x 106 psi
Tensile Strength: Ultimate (UTS)
220 to 310 MPa 32 to 45 x 103 psi
Tensile Strength: Yield (Proof)
210 to 270 MPa 31 to 40 x 103 psi
Thermal Properties
Latent Heat of Fusion
570 J/g
Maximum Temperature: Mechanical
190 °C 370 °F
Melting Completion (Liquidus)
600 °C 1110 °F
Melting Onset (Solidus)
560 °C 1030 °F
Specific Heat Capacity
890 J/kg-K 0.21 BTU/lb-°F
Thermal Conductivity
130 W/m-K 74 BTU/h-ft-°F
Thermal Expansion
21 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
33 % IACS
Electrical Conductivity: Equal Weight (Specific)
110 % IACS
Otherwise Unclassified Properties
Base Metal Price
10 % relative
Density
2.7 g/cm3 170 lb/ft3
Embodied Carbon
7.9 kg CO2/kg material
Embodied Energy
140 MJ/kg 62 x 103 BTU/lb
Embodied Water
1030 L/kg 120 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
2.2 to 3.0 MJ/m3
Resilience: Unit (Modulus of Resilience)
300 to 510 kJ/m3
Stiffness to Weight: Axial
15 points
Stiffness to Weight: Bending
53 points
Strength to Weight: Axial
23 to 33 points
Strength to Weight: Bending
31 to 39 points
Thermal Diffusivity
54 mm2/s
Thermal Shock Resistance
10 to 15 points
Alloy Composition
Among cast aluminum alloys, the composition of EN AC-48000 aluminum is notable for containing comparatively high amounts of silicon (Si) and magnesium (Mg). Silicon is used to improve casting fluidity and lower melting temperature. It also has a strengthening effect. Magnesium promotes hardenability through both heat treatment and strain hardening mechanisms. It also increases susceptibility to intergranular corrosion.
| Al | 80.4 to 87.2 | |
| Si | 10.5 to 13.5 | |
| Cu | 0.8 to 1.5 | |
| Mg | 0.8 to 1.5 | |
| Ni | 0.7 to 1.3 | |
| Fe | 0 to 0.7 | |
| Mn | 0 to 0.35 | |
| Zn | 0 to 0.35 | |
| Ti | 0 to 0.25 | |
| res. | 0 to 0.15 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Similar Alloys
Further Reading
EN 1706: Aluminium and aluminium alloys. Castings. Chemical composition and mechanical properties
Handbook of Aluminum Bonding Technology and Data, J. D. Minford, 1993