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1070A-H12 Aluminum

1070A-H12 aluminum is 1070A 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 1070A-H12 aluminum to: 1000-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

Brinell Hardness

26

Elastic (Young's, Tensile) Modulus

68 GPa 9.9 x 106 psi

Elongation at Break

9.6 %

Fatigue Strength

47 MPa 6.8 x 103 psi

Poisson's Ratio

0.33

Shear Modulus

26 GPa 3.7 x 106 psi

Shear Strength

58 MPa 8.4 x 103 psi

Tensile Strength: Ultimate (UTS)

97 MPa 14 x 103 psi

Tensile Strength: Yield (Proof)

62 MPa 9.0 x 103 psi

Thermal Properties

Latent Heat of Fusion

400 J/g

Maximum Temperature: Mechanical

170 °C 340 °F

Melting Completion (Liquidus)

640 °C 1190 °F

Melting Onset (Solidus)

640 °C 1180 °F

Specific Heat Capacity

900 J/kg-K 0.22 BTU/lb-°F

Thermal Conductivity

230 W/m-K 130 BTU/h-ft-°F

Thermal Expansion

23 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

60 % IACS

Electrical Conductivity: Equal Weight (Specific)

200 % IACS

Otherwise Unclassified Properties

Base Metal Price

9.0 % relative

Density

2.7 g/cm3 170 lb/ft3

Embodied Carbon

8.2 kg CO2/kg material

Embodied Energy

150 MJ/kg 67 x 103 BTU/lb

Embodied Water

1200 L/kg 140 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

8.3 MJ/m3

Resilience: Unit (Modulus of Resilience)

28 kJ/m3

Stiffness to Weight: Axial

14 points

Stiffness to Weight: Bending

50 points

Strength to Weight: Axial

10 points

Strength to Weight: Bending

17 points

Thermal Diffusivity

94 mm2/s

Thermal Shock Resistance

4.3 points

Alloy Composition

Aluminum (Al)Al 99.7 to 100
Iron (Fe)Fe 0 to 0.25
Silicon (Si)Si 0 to 0.2
Zinc (Zn)Zn 0 to 0.070
Manganese (Mn)Mn 0 to 0.030
Titanium (Ti)Ti 0 to 0.030
Copper (Cu)Cu 0 to 0.030
Magnesium (Mg)Mg 0 to 0.030

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

Followup Questions

Further Reading

EN 755-2: Aluminium and aluminium alloys. Extruded rod/bar, tube and profiles. Mechanical properties

EN 485-2: Aluminium and aluminium alloys. Sheet, strip and plate. Mechanical properties

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

ISO 6361-2: Wrought aluminium and aluminium alloys - Sheets, strips and plates - Part 2: Mechanical properties

EN 573-3: Aluminium and aluminium alloys. Chemical composition and form of wrought products. Chemical composition and form of products

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