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1235-H111 Aluminum

1235-H111 aluminum is 1235 aluminum in the H111 temper. To achieve this temper, the metal is strain hardened to a strength that is lower than what is permissible for H11 (1/8-hard). The graph bars on the material properties cards below compare 1235-H111 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

Elastic (Young's, Tensile) Modulus

69 GPa 9.9 x 106 psi

Elongation at Break

34 %

Fatigue Strength

58 MPa 8.5 x 103 psi

Poisson's Ratio

0.33

Shear Modulus

26 GPa 3.7 x 106 psi

Shear Strength

56 MPa 8.1 x 103 psi

Tensile Strength: Ultimate (UTS)

84 MPa 12 x 103 psi

Tensile Strength: Yield (Proof)

57 MPa 8.3 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 1190 °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

9.5 % 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

1190 L/kg 140 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

25 MJ/m3

Resilience: Unit (Modulus of Resilience)

24 kJ/m3

Stiffness to Weight: Axial

14 points

Stiffness to Weight: Bending

50 points

Strength to Weight: Axial

8.6 points

Strength to Weight: Bending

16 points

Thermal Diffusivity

93 mm2/s

Thermal Shock Resistance

3.7 points

Alloy Composition

Aluminum (Al)Al 99.35 to 100
Silicon (Si)Si 0 to 0.65
Iron (Fe)Fe 0 to 0.65
Zinc (Zn)Zn 0 to 0.1
Titanium (Ti)Ti 0 to 0.060
Manganese (Mn)Mn 0 to 0.050
Copper (Cu)Cu 0 to 0.050
Magnesium (Mg)Mg 0 to 0.050
Vanadium (V)V 0 to 0.050

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

Followup Questions

Further Reading

ASTM B491: Standard Specification for Aluminum and Aluminum-Alloy Extruded Round Tubes for General-Purpose Applications

Aluminum: Properties and Physical Metallurgy, John E. Hatch (editor), 1984

Aluminum Standards and Data, Aluminum Association Inc., 2013

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