7005-O Aluminum
7005-O aluminum is 7005 aluminum in the annealed condition. It has the lowest strength and highest ductility compared to the other variants of 7005 aluminum. The graph bars on the material properties cards below compare 7005-O aluminum to: 7000-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
70 GPa 10 x 106 psi
Elongation at Break
20 %
Fatigue Strength
100 MPa 15 x 103 psi
Poisson's Ratio
0.33
Shear Modulus
26 GPa 3.8 x 106 psi
Shear Strength
120 MPa 17 x 103 psi
Tensile Strength: Ultimate (UTS)
200 MPa 28 x 103 psi
Tensile Strength: Yield (Proof)
95 MPa 14 x 103 psi
Thermal Properties
Latent Heat of Fusion
380 J/g
Maximum Temperature: Mechanical
200 °C 400 °F
Melting Completion (Liquidus)
640 °C 1190 °F
Melting Onset (Solidus)
610 °C 1120 °F
Specific Heat Capacity
880 J/kg-K 0.21 BTU/lb-°F
Thermal Conductivity
170 W/m-K 96 BTU/h-ft-°F
Thermal Expansion
23 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
43 % IACS
Electrical Conductivity: Equal Weight (Specific)
130 % IACS
Otherwise Unclassified Properties
Base Metal Price
9.5 % relative
Calomel Potential
-850 mV
Density
2.9 g/cm3 180 lb/ft3
Embodied Carbon
8.3 kg CO2/kg material
Embodied Energy
150 MJ/kg 65 x 103 BTU/lb
Embodied Water
1150 L/kg 140 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
32 MJ/m3
Resilience: Unit (Modulus of Resilience)
65 kJ/m3
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
47 points
Strength to Weight: Axial
19 points
Strength to Weight: Bending
26 points
Thermal Diffusivity
65 mm2/s
Thermal Shock Resistance
8.7 points
Alloy Composition
| Al | 91 to 94.7 | |
| Zn | 4.0 to 5.0 | |
| Mg | 1.0 to 1.8 | |
| Mn | 0.2 to 0.7 | |
| Fe | 0 to 0.4 | |
| Si | 0 to 0.35 | |
| Zr | 0.080 to 0.2 | |
| Cr | 0.060 to 0.2 | |
| Cu | 0 to 0.1 | |
| Ti | 0.010 to 0.060 | |
| res. | 0 to 0.15 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Further Reading
ASTM B221: Standard Specification for Aluminum and Aluminum-Alloy Extruded Bars, Rods, Wire, Profiles, and Tubes
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
Properties and Selection: Nonferrous Alloys and Special-Purpose Materials, ASM Handbook vol. 2, ASM International, 1993