6005 (AlSiMg, A96005) Aluminum
6005 aluminum is a 6000-series aluminum alloy: there is significant alloying with both magnesium and silicon, and the alloy is formulated for primary forming into wrought products. 6005 is the Aluminum Association (AA) designation for this material. In European standards, it will be given as EN AW-6005. AlSiMg is the EN chemical designation. And A96005 is the UNS number.
It originally received its standard designation in 1962.
The properties of 6005 aluminum include five 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 6005 aluminum to: 6000-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
90 to 95
Elastic (Young's, Tensile) Modulus
68 GPa 9.9 x 106 psi
Elongation at Break
9.5 to 17 %
Fatigue Strength
55 to 95 MPa 8.0 to 14 x 103 psi
Poisson's Ratio
0.33
Shear Modulus
26 GPa 3.7 x 106 psi
Shear Strength
120 to 210 MPa 17 to 30 x 103 psi
Tensile Strength: Ultimate (UTS)
190 to 310 MPa 28 to 45 x 103 psi
Tensile Strength: Yield (Proof)
100 to 280 MPa 15 to 40 x 103 psi
Thermal Properties
Latent Heat of Fusion
410 J/g
Maximum Temperature: Mechanical
160 °C 320 °F
Melting Completion (Liquidus)
650 °C 1210 °F
Melting Onset (Solidus)
610 °C 1130 °F
Specific Heat Capacity
900 J/kg-K 0.22 BTU/lb-°F
Thermal Conductivity
180 to 200 W/m-K 100 to 120 BTU/h-ft-°F
Thermal Expansion
23 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
54 % IACS
Electrical Conductivity: Equal Weight (Specific)
180 % IACS
Otherwise Unclassified Properties
Base Metal Price
9.5 % relative
Calomel Potential
-740 mV
Density
2.7 g/cm3 170 lb/ft3
Embodied Carbon
8.3 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)
27 to 36 MJ/m3
Resilience: Unit (Modulus of Resilience)
77 to 550 kJ/m3
Stiffness to Weight: Axial
14 points
Stiffness to Weight: Bending
51 points
Strength to Weight: Axial
20 to 32 points
Strength to Weight: Bending
28 to 38 points
Thermal Diffusivity
74 to 83 mm2/s
Thermal Shock Resistance
8.6 to 14 points
Alloy Composition
Among wrought aluminum alloys, the composition of 6005 aluminum is notable for containing comparatively high amounts of silicon (Si) and magnesium (Mg). Silicon is used to increase strength at the expense of ductility. It also lowers the melting temperature and raises the fluidity of the alloy. Magnesium promotes hardenability through both heat treatment and strain hardening mechanisms. It also increases susceptibility to intergranular corrosion.
| Al | 97.5 to 99 | |
| Si | 0.6 to 0.9 | |
| Mg | 0.4 to 0.6 | |
| Fe | 0 to 0.35 | |
| Mn | 0 to 0.1 | |
| Cr | 0 to 0.1 | |
| Ti | 0 to 0.1 | |
| Zn | 0 to 0.1 | |
| Cu | 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 B221: Standard Specification for Aluminum and Aluminum-Alloy Extruded Bars, Rods, Wire, Profiles, and Tubes
Advanced Materials in Automotive Engineering, Jason Rowe (editor), 2012
EN 755-2: Aluminium and aluminium alloys. Extruded rod/bar, tube and profiles. Mechanical properties
Aluminum Standards and Data, Aluminum Association Inc., 2013
ASM Specialty Handbook: Aluminum and Aluminum Alloys, J. R. Davis (editor), 1993
EN 573-3: Aluminium and aluminium alloys. Chemical composition and form of wrought products. Chemical composition and form of products