5088 (5088-O, AlMg5Mn0.4) Aluminum
5088 aluminum is a 5000-series aluminum alloy: the main alloying addition is magnesium, and it is formulated for primary forming into wrought products. Cited properties are appropriate for the annealed condition. 5088 is the Aluminum Association (AA) designation for this material. In European standards, it will be given as EN AW-5088. Additionally, the EN chemical designation is AlMg5Mn0,4. And the UNS number is A95088.
It received its standard designation in 2002, making it a fairly young material.
The graph bars on the material properties cards below compare 5088 aluminum to: 5000-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
68 GPa 9.8 x 106 psi
Elongation at Break
29 %
Fatigue Strength
180 MPa 26 x 103 psi
Poisson's Ratio
0.33
Shear Modulus
25 GPa 3.7 x 106 psi
Shear Strength
200 MPa 30 x 103 psi
Tensile Strength: Ultimate (UTS)
310 MPa 45 x 103 psi
Tensile Strength: Yield (Proof)
150 MPa 22 x 103 psi
Thermal Properties
Latent Heat of Fusion
390 J/g
Maximum Temperature: Mechanical
200 °C 390 °F
Melting Completion (Liquidus)
640 °C 1190 °F
Melting Onset (Solidus)
540 °C 1000 °F
Specific Heat Capacity
900 J/kg-K 0.22 BTU/lb-°F
Thermal Conductivity
120 W/m-K 72 BTU/h-ft-°F
Thermal Expansion
24 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
29 % IACS
Electrical Conductivity: Equal Weight (Specific)
98 % IACS
Otherwise Unclassified Properties
Base Metal Price
9.5 % relative
Density
2.7 g/cm3 170 lb/ft3
Embodied Carbon
9.0 kg CO2/kg material
Embodied Energy
150 MJ/kg 67 x 103 BTU/lb
Embodied Water
1180 L/kg 140 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
76 MJ/m3
Resilience: Unit (Modulus of Resilience)
170 kJ/m3
Stiffness to Weight: Axial
14 points
Stiffness to Weight: Bending
50 points
Strength to Weight: Axial
32 points
Strength to Weight: Bending
38 points
Thermal Diffusivity
51 mm2/s
Thermal Shock Resistance
14 points
Alloy Composition
Among wrought aluminum alloys, the composition of 5088 aluminum is notable for containing a comparatively high amount of magnesium (Mg) and including zirconium (Zr). Magnesium promotes hardenability through both heat treatment and strain hardening mechanisms. It also increases susceptibility to intergranular corrosion. Zirconium is used to increase an alloy's recrystallization temperature, which increases the temperature at which the alloy can be used without permanent loss of mechanical properties.
| Al | 92.4 to 94.8 | |
| Mg | 4.7 to 5.5 | |
| Mn | 0.2 to 0.5 | |
| Zn | 0.2 to 0.4 | |
| Fe | 0.1 to 0.35 | |
| Cu | 0 to 0.25 | |
| Si | 0 to 0.2 | |
| Cr | 0 to 0.15 | |
| Zr | 0 to 0.15 | |
| res. | 0 to 0.15 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Similar Alloys
Further Reading
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
CRC Materials Science and Engineering Handbook, 4th ed., James F. Shackelford et al. (editors), 2015