2017A-T42 Aluminum
2017A-T42 aluminum is 2017A aluminum in the T42 temper. To achieve this temper, the metal is solution heat-treated and naturally aged. Unlike T4 temper, this is done by the receiver rather than the supplier.
The graph bars on the material properties cards below compare 2017A-T42 aluminum to: 2000-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
110
Elastic (Young's, Tensile) Modulus
71 GPa 10 x 106 psi
Elongation at Break
14 %
Fatigue Strength
130 MPa 19 x 103 psi
Poisson's Ratio
0.33
Shear Modulus
27 GPa 3.9 x 106 psi
Shear Strength
270 MPa 39 x 103 psi
Tensile Strength: Ultimate (UTS)
440 MPa 64 x 103 psi
Tensile Strength: Yield (Proof)
260 MPa 38 x 103 psi
Thermal Properties
Latent Heat of Fusion
390 J/g
Maximum Temperature: Mechanical
220 °C 420 °F
Melting Completion (Liquidus)
650 °C 1190 °F
Melting Onset (Solidus)
510 °C 950 °F
Specific Heat Capacity
880 J/kg-K 0.21 BTU/lb-°F
Thermal Conductivity
150 W/m-K 85 BTU/h-ft-°F
Thermal Expansion
23 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
34 % IACS
Electrical Conductivity: Equal Weight (Specific)
100 % IACS
Otherwise Unclassified Properties
Base Metal Price
11 % relative
Density
3.0 g/cm3 190 lb/ft3
Embodied Carbon
8.2 kg CO2/kg material
Embodied Energy
150 MJ/kg 65 x 103 BTU/lb
Embodied Water
1140 L/kg 140 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
53 MJ/m3
Resilience: Unit (Modulus of Resilience)
490 kJ/m3
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
46 points
Strength to Weight: Axial
41 points
Strength to Weight: Bending
43 points
Thermal Diffusivity
56 mm2/s
Thermal Shock Resistance
19 points
Alloy Composition
| Al | 91.3 to 95.5 | |
| Cu | 3.5 to 4.5 | |
| Mn | 0.4 to 1.0 | |
| Mg | 0.4 to 1.0 | |
| Si | 0.2 to 0.8 | |
| Fe | 0 to 0.7 | |
| Ti | 0 to 0.25 | |
| Zr | 0 to 0.25 | |
| Zn | 0 to 0.25 | |
| Cr | 0 to 0.1 | |
| res. | 0 to 0.15 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Further Reading
Aerospace Materials, Brian Cantor et al. (editors), 2001
Handbook of Aluminum vol. 2: Alloy Production and Materials Manufacturing, George Totten and D. Scott MacKenzie (editors), 2003
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
EN 573-3: Aluminium and aluminium alloys. Chemical composition and form of wrought products. Chemical composition and form of products