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
| Al | 99.35 to 100 | |
| Si | 0 to 0.65 | |
| Fe | 0 to 0.65 | |
| Zn | 0 to 0.1 | |
| Ti | 0 to 0.060 | |
| Mn | 0 to 0.050 | |
| Cu | 0 to 0.050 | |
| Mg | 0 to 0.050 | |
| 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