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EN AC-47000 (47000-F, AISi12(Cu)) Cast Aluminum

EN AC-47000 aluminum is an aluminum alloy formulated for casting. Cited properties are appropriate for the as-fabricated (no temper or treatment) condition. 47000 is the EN numeric designation for this material. AISi12(Cu) is the EN chemical designation.

It has a moderately low tensile strength among the Euronorm (EN) cast aluminums in the database.

The graph bars on the material properties cards below compare EN AC-47000 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

60

Elastic (Young's, Tensile) Modulus

73 GPa 11 x 106 psi

Elongation at Break

1.7 %

Fatigue Strength

68 MPa 9.8 x 103 psi

Poisson's Ratio

0.33

Shear Modulus

27 GPa 4.0 x 106 psi

Tensile Strength: Ultimate (UTS)

180 MPa 26 x 103 psi

Tensile Strength: Yield (Proof)

97 MPa 14 x 103 psi

Thermal Properties

Latent Heat of Fusion

570 J/g

Maximum Temperature: Mechanical

170 °C 350 °F

Melting Completion (Liquidus)

590 °C 1090 °F

Melting Onset (Solidus)

570 °C 1050 °F

Specific Heat Capacity

900 J/kg-K 0.21 BTU/lb-°F

Thermal Conductivity

130 W/m-K 75 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

9.5 % relative

Density

2.6 g/cm3 160 lb/ft3

Embodied Carbon

7.7 kg CO2/kg material

Embodied Energy

140 MJ/kg 62 x 103 BTU/lb

Embodied Water

1040 L/kg 120 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

2.5 MJ/m3

Resilience: Unit (Modulus of Resilience)

65 kJ/m3

Stiffness to Weight: Axial

16 points

Stiffness to Weight: Bending

54 points

Strength to Weight: Axial

19 points

Strength to Weight: Bending

27 points

Thermal Diffusivity

55 mm2/s

Thermal Shock Resistance

8.3 points

Alloy Composition

Among cast aluminum alloys, the composition of EN AC-47000 aluminum is notable for containing a comparatively high amount of silicon (Si) and including chromium (Cr). Silicon is used to improve casting fluidity and lower melting temperature. It also has a strengthening effect. Chromium is used to limit grain growth during hot working or heat treatment, which improves ductility and toughness. Chromium also reduces the alloy's susceptibility to stress corrosion cracking. If the alloy is anodized, the presence of chromium will tend to add a yellow tint to the film.

Aluminum (Al) 82.1 to 89.5
Silicon (Si) 10.5 to 13.5
Copper (Cu) 0 to 1.0
Iron (Fe) 0 to 0.8
Manganese (Mn) 0.050 to 0.55
Zinc (Zn) 0 to 0.55
Magnesium (Mg) 0 to 0.35
Nickel (Ni) 0 to 0.3
Titanium (Ti) 0 to 0.2
Lead (Pb) 0 to 0.2
Chromium (Cr) 0 to 0.1
Tin (Sn) 0 to 0.1
Residuals 0 to 0.25

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 vol. 2: Alloy Production and Materials Manufacturing, George Totten and D. Scott MacKenzie (editors), 2003