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356.0-T6 Cast Aluminum

356.0-T6 aluminum is 356.0 aluminum in the T6 temper. To achieve this temper, the metal is solution heat-treated and artificially aged until it meets standard mechanical property requirements. It has the highest strength compared to the other variants of 356.0 aluminum.

The graph bars on the material properties cards below compare 356.0-T6 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


Elastic (Young's, Tensile) Modulus

70 GPa 10 x 106 psi

Elongation at Break

3.8 %

Fatigue Strength

75 MPa 11 x 103 psi

Poisson's Ratio


Shear Modulus

27 GPa 3.8 x 106 psi

Shear Strength

190 MPa 28 x 103 psi

Tensile Strength: Ultimate (UTS)

240 MPa 35 x 103 psi

Tensile Strength: Yield (Proof)

170 MPa 24 x 103 psi

Thermal Properties

Latent Heat of Fusion

500 J/g

Maximum Temperature: Mechanical

170 °C 340 °F

Melting Completion (Liquidus)

620 °C 1140 °F

Melting Onset (Solidus)

570 °C 1050 °F

Solidification (Pattern Maker's) Shrinkage

1.3 %

Specific Heat Capacity

900 J/kg-K 0.22 BTU/lb-°F

Thermal Conductivity

150 W/m-K 88 BTU/h-ft-°F

Thermal Expansion

21 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

40 % IACS

Electrical Conductivity: Equal Weight (Specific)

140 % IACS

Otherwise Unclassified Properties

Base Metal Price

9.5 % relative

Calomel Potential

-730 mV


2.6 g/cm3 160 lb/ft3

Embodied Carbon

8.0 kg CO2/kg material

Embodied Energy

150 MJ/kg 64 x 103 BTU/lb

Embodied Water

1110 L/kg 130 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

8.2 MJ/m3

Resilience: Unit (Modulus of Resilience)

190 kJ/m3

Stiffness to Weight: Axial

15 points

Stiffness to Weight: Bending

53 points

Strength to Weight: Axial

26 points

Strength to Weight: Bending

33 points

Thermal Diffusivity

64 m2/s

Thermal Shock Resistance

11 points

Alloy Composition

Aluminum (Al) 90.1 to 93.3
Silicon (Si) 6.5 to 7.5
Magnesium (Mg) 0.2 to 0.45
Iron (Fe) 0 to 0.6
Manganese (Mn) 0 to 0.35
Zinc (Zn) 0 to 0.35
Titanium (Ti) 0 to 0.25
Copper (Cu) 0 to 0.25
Residuals 0 to 0.15

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

Followup Questions

Further Reading

ASTM B618: Standard Specification for Aluminum-Alloy Investment Castings

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

ASTM B26: Standard Specification for Aluminum-Alloy Sand Castings

Advanced Materials in Automotive Engineering, Jason Rowe (editor), 2012

ASM Specialty Handbook: Aluminum and Aluminum Alloys, J. R. Davis (editor), 1993

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