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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


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


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.

Aluminum (Al) 80.4 to 87.2
Silicon (Si) 10.5 to 13.5
Copper (Cu) 0.8 to 1.5
Magnesium (Mg) 0.8 to 1.5
Nickel (Ni) 0.7 to 1.3
Iron (Fe) 0 to 0.7
Manganese (Mn) 0 to 0.35
Zinc (Zn) 0 to 0.35
Titanium (Ti) 0 to 0.25
Residuals 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