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1080A-H18 Aluminum

1080A-H18 aluminum is 1080A aluminum in the H18 temper. This is the strongest temper normally produced through the action of only strain hardening. It has the highest strength and lowest ductility compared to the other variants of 1080A aluminum.

The graph bars on the material properties cards below compare 1080A-H18 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

40

Elastic (Young's, Tensile) Modulus

68 GPa 9.9 x 106 psi

Elongation at Break

2.3 %

Fatigue Strength

43 MPa 6.2 x 103 psi

Poisson's Ratio

0.33

Shear Modulus

26 GPa 3.7 x 106 psi

Shear Strength

81 MPa 12 x 103 psi

Tensile Strength: Ultimate (UTS)

140 MPa 21 x 103 psi

Tensile Strength: Yield (Proof)

120 MPa 17 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

62 % IACS

Electrical Conductivity: Equal Weight (Specific)

200 % IACS

Otherwise Unclassified Properties

Base Metal Price

9.5 % relative

Density

2.7 g/cm3 170 lb/ft3

Embodied Carbon

8.3 kg CO2/kg material

Embodied Energy

160 MJ/kg 67 x 103 BTU/lb

Embodied Water

1200 L/kg 140 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

3.1 MJ/m3

Resilience: Unit (Modulus of Resilience)

100 kJ/m3

Stiffness to Weight: Axial

14 points

Stiffness to Weight: Bending

50 points

Strength to Weight: Axial

15 points

Strength to Weight: Bending

22 points

Thermal Diffusivity

94 mm2/s

Thermal Shock Resistance

6.4 points

Alloy Composition

Aluminum (Al)Al 99.8 to 100
Silicon (Si)Si 0 to 0.15
Iron (Fe)Fe 0 to 0.15
Zinc (Zn)Zn 0 to 0.060
Copper (Cu)Cu 0 to 0.030
Gallium (Ga)Ga 0 to 0.030
Manganese (Mn)Mn 0 to 0.020
Titanium (Ti)Ti 0 to 0.020
Magnesium (Mg)Mg 0 to 0.020

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

Followup Questions

Further Reading

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