EN AC-42200 (AlSi7Mg0.6) Cast Aluminum
EN AC-42200 aluminum is an aluminum alloy formulated for casting. 42200 is the EN numeric designation for this material. Additionally, the EN chemical designation is AlSi7Mg0,6.
It has a fairly high electrical conductivity among Euronorm (EN) cast aluminums. In addition, it has a moderately high melting temperature and a moderately high thermal conductivity.
The properties of EN AC-42200 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-42200 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
89 to 100
Elastic (Young's, Tensile) Modulus
70 GPa 10 x 106 psi
Elongation at Break
3.0 to 6.7 %
Fatigue Strength
86 to 90 MPa 13 x 103 psi
Poisson's Ratio
0.33
Shear Modulus
26 GPa 3.8 x 106 psi
Tensile Strength: Ultimate (UTS)
320 MPa 47 x 103 psi
Tensile Strength: Yield (Proof)
240 to 260 MPa 35 to 38 x 103 psi
Thermal Properties
Latent Heat of Fusion
500 J/g
Maximum Temperature: Mechanical
170 °C 340 °F
Melting Completion (Liquidus)
610 °C 1130 °F
Melting Onset (Solidus)
600 °C 1120 °F
Specific Heat Capacity
910 J/kg-K 0.22 BTU/lb-°F
Thermal Conductivity
150 W/m-K 89 BTU/h-ft-°F
Thermal Expansion
22 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
40 % IACS
Electrical Conductivity: Equal Weight (Specific)
140 % IACS
Otherwise Unclassified Properties
Base Metal Price
9.5 % relative
Density
2.6 g/cm3 160 lb/ft3
Embodied Carbon
8.0 kg CO2/kg material
Embodied Energy
150 MJ/kg 64 x 103 BTU/lb
Embodied Water
1110 L/kg 130 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
9.0 to 20 MJ/m3
Resilience: Unit (Modulus of Resilience)
410 to 490 kJ/m3
Stiffness to Weight: Axial
15 points
Stiffness to Weight: Bending
53 points
Strength to Weight: Axial
34 to 35 points
Strength to Weight: Bending
40 to 41 points
Thermal Diffusivity
66 mm2/s
Thermal Shock Resistance
15 points
Alloy Composition
Among cast aluminum alloys, the composition of EN AC-42200 aluminum is notable for containing a comparatively high amount of silicon (Si). Silicon is used to improve casting fluidity and lower melting temperature. It also has a strengthening effect.
| Al | 91 to 93.1 | |
| Si | 6.5 to 7.5 | |
| Mg | 0.45 to 0.7 | |
| Ti | 0 to 0.25 | |
| Fe | 0 to 0.19 | |
| Mn | 0 to 0.1 | |
| Zn | 0 to 0.070 | |
| Cu | 0 to 0.050 | |
| res. | 0 to 0.1 |
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
Aluminum: Properties and Physical Metallurgy, John E. Hatch (editor), 1984