EN AC-51400 (51400-F, AIMg5(Si)) Cast Aluminum
EN AC-51400 aluminum is an aluminum alloy formulated for casting. Cited properties are appropriate for the as-fabricated (no temper or treatment) condition. 51400 is the EN numeric designation for this material. AIMg5(Si) is the EN chemical designation.
It has a moderately high melting temperature among Euronorm (EN) cast aluminums. In addition, it has a moderately low thermal conductivity and a moderately low tensile strength.
The graph bars on the material properties cards below compare EN AC-51400 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
71
Elastic (Young's, Tensile) Modulus
67 GPa 9.8 x 106 psi
Elongation at Break
3.4 %
Fatigue Strength
85 MPa 12 x 103 psi
Poisson's Ratio
0.33
Shear Modulus
25 GPa 3.7 x 106 psi
Tensile Strength: Ultimate (UTS)
190 MPa 28 x 103 psi
Tensile Strength: Yield (Proof)
120 MPa 17 x 103 psi
Thermal Properties
Latent Heat of Fusion
400 J/g
Maximum Temperature: Mechanical
170 °C 340 °F
Melting Completion (Liquidus)
640 °C 1180 °F
Melting Onset (Solidus)
600 °C 1110 °F
Specific Heat Capacity
910 J/kg-K 0.22 BTU/lb-°F
Thermal Conductivity
110 W/m-K 65 BTU/h-ft-°F
Thermal Expansion
23 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
31 % 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
9.1 kg CO2/kg material
Embodied Energy
150 MJ/kg 66 x 103 BTU/lb
Embodied Water
1170 L/kg 140 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
5.6 MJ/m3
Resilience: Unit (Modulus of Resilience)
110 kJ/m3
Stiffness to Weight: Axial
14 points
Stiffness to Weight: Bending
51 points
Strength to Weight: Axial
20 points
Strength to Weight: Bending
28 points
Thermal Diffusivity
46 mm2/s
Thermal Shock Resistance
8.6 points
Alloy Composition
Among cast aluminum alloys, the composition of EN AC-51400 aluminum is notable for containing a comparatively high amount of magnesium (Mg). Magnesium promotes hardenability through both heat treatment and strain hardening mechanisms. It also increases susceptibility to intergranular corrosion.
| Al | 90.5 to 95.5 | |
| Mg | 4.5 to 6.5 | |
| Si | 0 to 1.5 | |
| Fe | 0 to 0.55 | |
| Mn | 0 to 0.45 | |
| Ti | 0 to 0.2 | |
| Zn | 0 to 0.1 | |
| Cu | 0 to 0.050 | |
| 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