8011A-H18 Aluminum
8011A-H18 aluminum is 8011A 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 8011A aluminum.
The graph bars on the material properties cards below compare 8011A-H18 aluminum to: otherwise unclassified aluminums (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
50
Elastic (Young's, Tensile) Modulus
69 GPa 10 x 106 psi
Elongation at Break
1.7 %
Fatigue Strength
59 MPa 8.6 x 103 psi
Poisson's Ratio
0.33
Shear Modulus
26 GPa 3.8 x 106 psi
Tensile Strength: Ultimate (UTS)
180 MPa 26 x 103 psi
Tensile Strength: Yield (Proof)
170 MPa 24 x 103 psi
Thermal Properties
Latent Heat of Fusion
400 J/g
Maximum Temperature: Mechanical
170 °C 340 °F
Melting Completion (Liquidus)
650 °C 1190 °F
Melting Onset (Solidus)
630 °C 1170 °F
Specific Heat Capacity
900 J/kg-K 0.21 BTU/lb-°F
Thermal Conductivity
210 W/m-K 120 BTU/h-ft-°F
Thermal Expansion
23 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
56 % IACS
Electrical Conductivity: Equal Weight (Specific)
180 % 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 66 x 103 BTU/lb
Embodied Water
1180 L/kg 140 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
3.0 MJ/m3
Resilience: Unit (Modulus of Resilience)
200 kJ/m3
Stiffness to Weight: Axial
14 points
Stiffness to Weight: Bending
50 points
Strength to Weight: Axial
18 points
Strength to Weight: Bending
26 points
Thermal Diffusivity
86 mm2/s
Thermal Shock Resistance
8.1 points
Alloy Composition
| Al | 97.5 to 99.1 | |
| Fe | 0.5 to 1.0 | |
| Si | 0.4 to 0.8 | |
| Mn | 0 to 0.1 | |
| Cr | 0 to 0.1 | |
| Zn | 0 to 0.1 | |
| Cu | 0 to 0.1 | |
| Mg | 0 to 0.1 | |
| Ti | 0 to 0.050 | |
| res. | 0 to 0.15 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Further Reading
Iron in Aluminium Alloys: Impurity and Alloying Element, N. A. Belov et al., 2002
EN 485-2: Aluminium and aluminium alloys. Sheet, strip and plate. Mechanical properties
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
Properties and Selection: Nonferrous Alloys and Special-Purpose Materials, ASM Handbook vol. 2, ASM International, 1993