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296.0-T4 Cast Aluminum

296.0-T4 aluminum is 296.0 aluminum in the T4 temper. To achieve this temper, the metal is solution heat-treated and naturally aged. It has the highest ductility compared to the other variants of 296.0 aluminum.

The graph bars on the material properties cards below compare 296.0-T4 aluminum to: ANSI/AA 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

75

Elastic (Young's, Tensile) Modulus

72 GPa 10 x 106 psi

Elongation at Break

7.1 %

Fatigue Strength

55 MPa 7.9 x 103 psi

Poisson's Ratio

0.33

Shear Modulus

27 GPa 3.9 x 106 psi

Tensile Strength: Ultimate (UTS)

260 MPa 38 x 103 psi

Tensile Strength: Yield (Proof)

120 MPa 18 x 103 psi

Thermal Properties

Latent Heat of Fusion

420 J/g

Maximum Temperature: Mechanical

170 °C 340 °F

Melting Completion (Liquidus)

630 °C 1170 °F

Melting Onset (Solidus)

540 °C 1000 °F

Specific Heat Capacity

870 J/kg-K 0.21 BTU/lb-°F

Thermal Conductivity

130 W/m-K 77 BTU/h-ft-°F

Thermal Expansion

22 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

33 % IACS

Electrical Conductivity: Equal Weight (Specific)

99 % IACS

Otherwise Unclassified Properties

Base Metal Price

11 % relative

Density

3.0 g/cm3 190 lb/ft3

Embodied Carbon

7.8 kg CO2/kg material

Embodied Energy

150 MJ/kg 63 x 103 BTU/lb

Embodied Water

1110 L/kg 130 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

15 MJ/m3

Resilience: Unit (Modulus of Resilience)

110 kJ/m3

Stiffness to Weight: Axial

13 points

Stiffness to Weight: Bending

46 points

Strength to Weight: Axial

24 points

Strength to Weight: Bending

30 points

Thermal Diffusivity

51 mm2/s

Thermal Shock Resistance

12 points

Alloy Composition

Aluminum (Al)Al 89 to 94
Copper (Cu)Cu 4.0 to 5.0
Silicon (Si)Si 2.0 to 3.0
Iron (Fe)Fe 0 to 1.2
Zinc (Zn)Zn 0 to 0.5
Manganese (Mn)Mn 0 to 0.35
Nickel (Ni)Ni 0 to 0.35
Titanium (Ti)Ti 0 to 0.25
Magnesium (Mg)Mg 0 to 0.050
Residualsres. 0 to 0.35

All values are % weight. Ranges represent what is permitted under applicable standards.

Followup Questions

Further Reading

ASTM B108: Standard Specification for Aluminum-Alloy Permanent Mold Castings

Iron in Aluminium Alloys: Impurity and Alloying Element, N. A. Belov et al., 2002

Properties and Selection: Nonferrous Alloys and Special-Purpose Materials, ASM Handbook vol. 2, ASM International, 1993