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5056-H12 Aluminum

5056-H12 aluminum is 5056 aluminum in the H12 temper. To achieve this temper, the metal is strain hardened to a strength that is roughly a quarter of the way between annealed (O) and full-hard (H18). The graph bars on the material properties cards below compare 5056-H12 aluminum to: 5000-series alloys (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

Elastic (Young's, Tensile) Modulus

67 GPa 9.8 x 106 psi

Elongation at Break

7.2 %

Fatigue Strength

190 MPa 27 x 103 psi

Poisson's Ratio

0.33

Shear Modulus

25 GPa 3.7 x 106 psi

Shear Strength

210 MPa 30 x 103 psi

Tensile Strength: Ultimate (UTS)

350 MPa 51 x 103 psi

Tensile Strength: Yield (Proof)

260 MPa 37 x 103 psi

Thermal Properties

Latent Heat of Fusion

400 J/g

Maximum Temperature: Mechanical

190 °C 370 °F

Melting Completion (Liquidus)

640 °C 1180 °F

Melting Onset (Solidus)

570 °C 1050 °F

Specific Heat Capacity

910 J/kg-K 0.22 BTU/lb-°F

Thermal Conductivity

130 W/m-K 73 BTU/h-ft-°F

Thermal Expansion

24 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

29 % IACS

Electrical Conductivity: Equal Weight (Specific)

99 % IACS

Otherwise Unclassified Properties

Base Metal Price

9.5 % relative

Calomel Potential

-780 mV

Density

2.7 g/cm3 170 lb/ft3

Embodied Carbon

9.0 kg CO2/kg material

Embodied Energy

150 MJ/kg 66 x 103 BTU/lb

Embodied Water

1180 L/kg 140 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

23 MJ/m3

Resilience: Unit (Modulus of Resilience)

490 kJ/m3

Stiffness to Weight: Axial

14 points

Stiffness to Weight: Bending

51 points

Strength to Weight: Axial

37 points

Strength to Weight: Bending

42 points

Thermal Diffusivity

53 mm2/s

Thermal Shock Resistance

16 points

Alloy Composition

Aluminum (Al)Al 93 to 95.4
Magnesium (Mg)Mg 4.5 to 5.6
Iron (Fe)Fe 0 to 0.4
Silicon (Si)Si 0 to 0.3
Manganese (Mn)Mn 0.050 to 0.2
Chromium (Cr)Cr 0.050 to 0.2
Zinc (Zn)Zn 0 to 0.1
Copper (Cu)Cu 0 to 0.1
Residualsres. 0 to 0.15

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

Followup Questions

Further Reading

ASTM B211: Standard Specification for Aluminum and Aluminum-Alloy Bar, Rod, and Wire

Aluminum Standards and Data, Aluminum Association Inc., 2013

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