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EN AC-41000 (AISi2MgTi) Cast Aluminum

EN AC-41000 aluminum is an aluminum alloy formulated for casting. 41000 is the EN numeric designation for this material. AISi2MgTi is the EN chemical designation.

It has the highest melting temperature among Euronorm (EN) cast aluminums. In addition, it has the highest thermal conductivity and a moderately high electrical conductivity.

The properties of EN AC-41000 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-41000 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

57 to 97

Elastic (Young's, Tensile) Modulus

69 GPa 10 x 106 psi

Elongation at Break

4.5 %

Fatigue Strength

58 to 71 MPa 8.4 to 10 x 103 psi

Poisson's Ratio

0.33

Shear Modulus

26 GPa 3.8 x 106 psi

Tensile Strength: Ultimate (UTS)

170 to 280 MPa 25 to 41 x 103 psi

Tensile Strength: Yield (Proof)

80 to 210 MPa 12 to 30 x 103 psi

Thermal Properties

Latent Heat of Fusion

420 J/g

Maximum Temperature: Mechanical

170 °C 340 °F

Melting Completion (Liquidus)

640 °C 1180 °F

Melting Onset (Solidus)

630 °C 1160 °F

Specific Heat Capacity

900 J/kg-K 0.21 BTU/lb-°F

Thermal Conductivity

170 W/m-K 96 BTU/h-ft-°F

Thermal Expansion

23 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

Density

2.7 g/cm3 170 lb/ft3

Embodied Carbon

8.2 kg CO2/kg material

Embodied Energy

150 MJ/kg 66 x 103 BTU/lb

Embodied Water

1160 L/kg 140 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

6.4 to 11 MJ/m3

Resilience: Unit (Modulus of Resilience)

46 to 300 kJ/m3

Stiffness to Weight: Axial

14 points

Stiffness to Weight: Bending

51 points

Strength to Weight: Axial

18 to 29 points

Strength to Weight: Bending

26 to 35 points

Thermal Diffusivity

69 mm2/s

Thermal Shock Resistance

7.8 to 13 points

Alloy Composition

Among cast aluminum alloys, the composition of EN AC-41000 aluminum is notable for including lead (Pb) and tin (Sn). Lead is used to improve machinability at the cost of toxicity and a decrease in weldability. Tin is used to increase bearing properties at the cost of a decrease in corrosion resistance.

Aluminum (Al) 95.2 to 97.6
Silicon (Si) 1.6 to 2.4
Magnesium (Mg) 0.45 to 0.65
Manganese (Mn) 0.3 to 0.5
Iron (Fe) 0 to 0.6
Titanium (Ti) 0.050 to 0.2
Zinc (Zn) 0 to 0.1
Copper (Cu) 0 to 0.1
Nickel (Ni) 0 to 0.050
Tin (Sn) 0 to 0.050
Lead (Pb) 0 to 0.050
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

CRC Materials Science and Engineering Handbook, 4th ed., James F. Shackelford et al. (editors), 2015