EN AC-47000 (47000-F, AISi12(Cu)) Cast Aluminum
EN AC-47000 aluminum is an aluminum alloy formulated for casting. Cited properties are appropriate for the as-fabricated (no temper or treatment) condition. 47000 is the EN numeric designation for this material. AISi12(Cu) is the EN chemical designation.
It has a moderately low tensile strength among the Euronorm (EN) cast aluminums in the database.
The graph bars on the material properties cards below compare EN AC-47000 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
60
Elastic (Young's, Tensile) Modulus
73 GPa 11 x 106 psi
Elongation at Break
1.7 %
Fatigue Strength
68 MPa 9.8 x 103 psi
Poisson's Ratio
0.33
Shear Modulus
27 GPa 4.0 x 106 psi
Tensile Strength: Ultimate (UTS)
180 MPa 26 x 103 psi
Tensile Strength: Yield (Proof)
97 MPa 14 x 103 psi
Thermal Properties
Latent Heat of Fusion
570 J/g
Maximum Temperature: Mechanical
170 °C 350 °F
Melting Completion (Liquidus)
590 °C 1090 °F
Melting Onset (Solidus)
570 °C 1050 °F
Specific Heat Capacity
900 J/kg-K 0.21 BTU/lb-°F
Thermal Conductivity
130 W/m-K 75 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
9.5 % relative
Density
2.6 g/cm3 160 lb/ft3
Embodied Carbon
7.7 kg CO2/kg material
Embodied Energy
140 MJ/kg 62 x 103 BTU/lb
Embodied Water
1040 L/kg 120 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
2.5 MJ/m3
Resilience: Unit (Modulus of Resilience)
65 kJ/m3
Stiffness to Weight: Axial
16 points
Stiffness to Weight: Bending
54 points
Strength to Weight: Axial
19 points
Strength to Weight: Bending
27 points
Thermal Diffusivity
55 mm2/s
Thermal Shock Resistance
8.3 points
Alloy Composition
Among cast aluminum alloys, the composition of EN AC-47000 aluminum is notable for containing a comparatively high amount of silicon (Si) and including chromium (Cr). Silicon is used to improve casting fluidity and lower melting temperature. It also has a strengthening effect. Chromium is used to limit grain growth during hot working or heat treatment, which improves ductility and toughness. Chromium also reduces the alloy's susceptibility to stress corrosion cracking. If the alloy is anodized, the presence of chromium will tend to add a yellow tint to the film.
| Al | 82.1 to 89.5 | |
| Si | 10.5 to 13.5 | |
| Cu | 0 to 1.0 | |
| Fe | 0 to 0.8 | |
| Mn | 0.050 to 0.55 | |
| Zn | 0 to 0.55 | |
| Mg | 0 to 0.35 | |
| Ni | 0 to 0.3 | |
| Ti | 0 to 0.2 | |
| Pb | 0 to 0.2 | |
| Cr | 0 to 0.1 | |
| Sn | 0 to 0.1 | |
| res. | 0 to 0.25 |
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 vol. 2: Alloy Production and Materials Manufacturing, George Totten and D. Scott MacKenzie (editors), 2003