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EN AC-43500 (AlSi10MnMg) Cast Aluminum

EN AC-43500 aluminum is an aluminum alloy formulated for casting. 43500 is the EN numeric designation for this material. AlSi10MnMg is the EN chemical designation. It can have the highest ductility and has a moderately high electrical conductivity among Euronorm (EN) cast aluminums.

The properties of EN AC-43500 aluminum include three common variations. This page shows summary ranges across all of them. For more specific values, follow the links immediately below. The graph bars on the material properties cards further below compare EN AC-43500 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

68 to 91

Elastic (Young's, Tensile) Modulus

72 GPa 10 x 106 psi

Elongation at Break

4.5 to 13 %

Fatigue Strength

62 to 100 MPa 9.0 to 15 x 103 psi

Poisson's Ratio


Shear Modulus

27 GPa 3.9 x 106 psi

Tensile Strength: Ultimate (UTS)

220 to 300 MPa 32 to 44 x 103 psi

Tensile Strength: Yield (Proof)

140 to 170 MPa 20 to 25 x 103 psi

Thermal Properties

Latent Heat of Fusion

550 J/g

Maximum Temperature: Mechanical

170 °C 340 °F

Melting Completion (Liquidus)

600 °C 1100 °F

Melting Onset (Solidus)

590 °C 1090 °F

Specific Heat Capacity

900 J/kg-K 0.22 BTU/lb-°F

Thermal Conductivity

140 W/m-K 80 BTU/h-ft-°F

Thermal Expansion

22 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

38 % IACS

Electrical Conductivity: Equal Weight (Specific)

130 % IACS

Otherwise Unclassified Properties

Base Metal Price

9.5 % relative


2.6 g/cm3 160 lb/ft3

Embodied Carbon

7.8 kg CO2/kg material

Embodied Energy

150 MJ/kg 63 x 103 BTU/lb

Embodied Water

1070 L/kg 130 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

12 to 26 MJ/m3

Resilience: Unit (Modulus of Resilience)

130 to 200 kJ/m3

Stiffness to Weight: Axial

16 points

Stiffness to Weight: Bending

54 points

Strength to Weight: Axial

24 to 33 points

Strength to Weight: Bending

32 to 39 points

Thermal Diffusivity

60 mm2/s

Thermal Shock Resistance

10 to 14 points

Alloy Composition

Among cast aluminum alloys, the composition of EN AC-43500 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.

Aluminum (Al)Al 86.4 to 90.5
Silicon (Si)Si 9.0 to 11.5
Manganese (Mn)Mn 0.4 to 0.8
Magnesium (Mg)Mg 0.1 to 0.6
Iron (Fe)Fe 0 to 0.25
Titanium (Ti)Ti 0 to 0.2
Zinc (Zn)Zn 0 to 0.070
Copper (Cu)Cu 0 to 0.050
Residualsres. 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

Aluminum: Properties and Physical Metallurgy, John E. Hatch (editor), 1984