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EN AC-46300 (46300-F, AISi7Cu3Mg) Cast Aluminum

EN AC-46300 aluminum is an aluminum alloy formulated for casting. Cited properties are appropriate for the as-fabricated (no temper or treatment) condition. 46300 is the EN numeric designation for this material. AISi7Cu3Mg is the EN chemical designation.

It has a moderately high density among Euronorm (EN) cast aluminums. In addition, it has a moderately low electrical conductivity and a fairly low melting temperature.

The graph bars on the material properties cards below compare EN AC-46300 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


Elastic (Young's, Tensile) Modulus

73 GPa 11 x 106 psi

Elongation at Break

1.1 %

Fatigue Strength

79 MPa 11 x 103 psi

Poisson's Ratio


Shear Modulus

27 GPa 4.0 x 106 psi

Tensile Strength: Ultimate (UTS)

200 MPa 29 x 103 psi

Tensile Strength: Yield (Proof)

110 MPa 17 x 103 psi

Thermal Properties

Latent Heat of Fusion

490 J/g

Maximum Temperature: Mechanical

170 °C 340 °F

Melting Completion (Liquidus)

630 °C 1160 °F

Melting Onset (Solidus)

530 °C 990 °F

Specific Heat Capacity

880 J/kg-K 0.21 BTU/lb-°F

Thermal Conductivity

120 W/m-K 68 BTU/h-ft-°F

Thermal Expansion

22 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

27 % IACS

Electrical Conductivity: Equal Weight (Specific)

84 % IACS

Otherwise Unclassified Properties

Base Metal Price

10 % relative


2.9 g/cm3 180 lb/ft3

Embodied Carbon

7.7 kg CO2/kg material

Embodied Energy

140 MJ/kg 62 x 103 BTU/lb

Embodied Water

1060 L/kg 130 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

1.9 MJ/m3

Resilience: Unit (Modulus of Resilience)

89 kJ/m3

Stiffness to Weight: Axial

14 points

Stiffness to Weight: Bending

49 points

Strength to Weight: Axial

20 points

Strength to Weight: Bending

27 points

Thermal Diffusivity

47 mm2/s

Thermal Shock Resistance

9.1 points

Alloy Composition

Among cast aluminum alloys, the composition of EN AC-46300 aluminum is notable for including lead (Pb) and containing a comparatively high amount of copper (Cu). Lead is used to improve machinability at the cost of toxicity and a decrease in weldability. Copper is used to improve strength. This comes at the cost of a decrease in corrosion resistance and weldability.

Aluminum (Al)Al 84 to 90
Silicon (Si)Si 6.5 to 8.0
Copper (Cu)Cu 3.0 to 4.0
Magnesium (Mg)Mg 0.3 to 0.6
Manganese (Mn)Mn 0.2 to 0.65
Iron (Fe)Fe 0 to 0.8
Zinc (Zn)Zn 0 to 0.65
Nickel (Ni)Ni 0 to 0.3
Titanium (Ti)Ti 0 to 0.25
Lead (Pb)Pb 0 to 0.15
Tin (Sn)Sn 0 to 0.1
Residualsres. 0 to 0.55

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