EN AC-48100 (AISi17Cu4Mg) Cast Aluminum
EN AC-48100 aluminum is an aluminum alloy formulated for casting. 48100 is the EN numeric designation for this material. AISi17Cu4Mg is the EN chemical designation.
It has the lowest melting temperature among Euronorm (EN) cast aluminums. In addition, it has a moderately low electrical conductivity and a moderately high density.
The properties of EN AC-48100 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-48100 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 140
Elastic (Young's, Tensile) Modulus
76 GPa 11 x 106 psi
Elongation at Break
1.1 %
Fatigue Strength
120 to 130 MPa 18 to 19 x 103 psi
Poisson's Ratio
0.33
Shear Modulus
29 GPa 4.1 x 106 psi
Tensile Strength: Ultimate (UTS)
240 to 330 MPa 34 to 48 x 103 psi
Tensile Strength: Yield (Proof)
190 to 300 MPa 28 to 43 x 103 psi
Thermal Properties
Latent Heat of Fusion
640 J/g
Maximum Temperature: Mechanical
170 °C 340 °F
Melting Completion (Liquidus)
580 °C 1080 °F
Melting Onset (Solidus)
470 °C 880 °F
Specific Heat Capacity
880 J/kg-K 0.21 BTU/lb-°F
Thermal Conductivity
130 W/m-K 77 BTU/h-ft-°F
Thermal Expansion
20 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
27 % IACS
Electrical Conductivity: Equal Weight (Specific)
87 % IACS
Otherwise Unclassified Properties
Base Metal Price
11 % relative
Density
2.8 g/cm3 170 lb/ft3
Embodied Carbon
7.3 kg CO2/kg material
Embodied Energy
130 MJ/kg 58 x 103 BTU/lb
Embodied Water
940 L/kg 110 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
2.3 to 3.6 MJ/m3
Resilience: Unit (Modulus of Resilience)
250 to 580 kJ/m3
Stiffness to Weight: Axial
15 points
Stiffness to Weight: Bending
51 points
Strength to Weight: Axial
24 to 33 points
Strength to Weight: Bending
31 to 38 points
Thermal Diffusivity
55 mm2/s
Thermal Shock Resistance
11 to 16 points
Alloy Composition
Among cast aluminum alloys, the composition of EN AC-48100 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 | 72.1 to 79.8 | |
| Si | 16 to 18 | |
| Cu | 4.0 to 5.0 | |
| Zn | 0 to 1.5 | |
| Fe | 0 to 1.3 | |
| Mg | 0.25 to 0.65 | |
| Mn | 0 to 0.5 | |
| Ni | 0 to 0.3 | |
| Ti | 0 to 0.25 | |
| Sn | 0 to 0.15 | |
| 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
Iron in Aluminium Alloys: Impurity and Alloying Element, N. A. Belov et al., 2002