2017 (AlCu4MgSi, A92017) Aluminum
2017 aluminum is a 2000-series aluminum alloy: the main alloying addition is copper, and it is formulated for primary forming into wrought products. 2017 is the Aluminum Association (AA) designation for this material. In European standards, it will be given as EN AW-2017. AlCu4MgSi is the EN chemical designation. And A92017 is the UNS number.
It has been in use since 1916, but has only received its standard designation in 1954.
The properties of 2017 aluminum include six common variations. This page shows summary ranges across all of them. For more specific values, follow the links immediately below. The graph bars on the material properties cards further below compare 2017 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
Elastic (Young's, Tensile) Modulus
71 GPa 10 x 106 psi
Elongation at Break
12 to 18 %
Fatigue Strength
90 to 130 MPa 13 to 18 x 103 psi
Poisson's Ratio
0.33
Shear Modulus
27 GPa 3.9 x 106 psi
Shear Strength
130 to 260 MPa 18 to 38 x 103 psi
Tensile Strength: Ultimate (UTS)
190 to 430 MPa 27 to 62 x 103 psi
Tensile Strength: Yield (Proof)
76 to 260 MPa 11 to 37 x 103 psi
Thermal Properties
Latent Heat of Fusion
390 J/g
Maximum Temperature: Mechanical
190 °C 380 °F
Melting Completion (Liquidus)
640 °C 1180 °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 86 BTU/h-ft-°F
Thermal Expansion
24 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
38 % IACS
Electrical Conductivity: Equal Weight (Specific)
110 % IACS
Otherwise Unclassified Properties
Base Metal Price
10 % relative
Density
3.0 g/cm3 190 lb/ft3
Embodied Carbon
8.0 kg CO2/kg material
Embodied Energy
150 MJ/kg 64 x 103 BTU/lb
Embodied Water
1140 L/kg 140 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
24 to 66 MJ/m3
Resilience: Unit (Modulus of Resilience)
41 to 470 kJ/m3
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
46 points
Strength to Weight: Axial
17 to 40 points
Strength to Weight: Bending
24 to 42 points
Thermal Diffusivity
56 mm2/s
Thermal Shock Resistance
7.9 to 18 points
Alloy Composition
Among wrought aluminum alloys, the composition of 2017 aluminum is notable for containing a comparatively high amount of copper (Cu). Copper is used to improve strength. This comes at the cost of a decrease in corrosion resistance and weldability.
| Al | 91.6 to 95.5 | |
| Cu | 3.5 to 4.5 | |
| Mn | 0.4 to 1.0 | |
| Mg | 0.4 to 0.8 | |
| Si | 0.2 to 0.8 | |
| Fe | 0 to 0.7 | |
| Zn | 0 to 0.25 | |
| Ti | 0 to 0.15 | |
| Cr | 0 to 0.1 | |
| res. | 0 to 0.15 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Similar Alloys
Further Reading
ASTM B211: Standard Specification for Aluminum and Aluminum-Alloy Bar, Rod, and Wire
Aerospace Materials, Brian Cantor et al. (editors), 2001
Aluminum Standards and Data, Aluminum Association Inc., 2013
ISO 6361-2: Wrought aluminium and aluminium alloys - Sheets, strips and plates - Part 2: Mechanical properties
Properties and Selection: Nonferrous Alloys and Special-Purpose Materials, ASM Handbook vol. 2, ASM International, 1993