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6106 (6106-T6, AlMgSiMn) Aluminum

6106 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. Cited properties are appropriate for the T6 temper. To achieve this temper, the metal is solution heat-treated and artificially aged until it meets standard mechanical property requirements. 6106 is the Aluminum Association (AA) designation for this material. In European standards, it will be given as EN AW-6106. AlMgSiMn is the EN chemical designation. Additionally, the UNS number is A96106.

It originally received its standard designation in 1979.

The graph bars on the material properties cards below compare 6106 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

Elastic (Young's, Tensile) Modulus

69 GPa 9.9 x 106 psi

Elongation at Break

9.1 %

Fatigue Strength

88 MPa 13 x 103 psi

Poisson's Ratio

0.33

Shear Modulus

26 GPa 3.8 x 106 psi

Shear Strength

170 MPa 24 x 103 psi

Tensile Strength: Ultimate (UTS)

290 MPa 41 x 103 psi

Tensile Strength: Yield (Proof)

220 MPa 32 x 103 psi

Thermal Properties

Latent Heat of Fusion

400 J/g

Maximum Temperature: Mechanical

160 °C 330 °F

Melting Completion (Liquidus)

660 °C 1210 °F

Melting Onset (Solidus)

610 °C 1130 °F

Specific Heat Capacity

900 J/kg-K 0.22 BTU/lb-°F

Thermal Conductivity

190 W/m-K 110 BTU/h-ft-°F

Thermal Expansion

23 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

49 % IACS

Electrical Conductivity: Equal Weight (Specific)

160 % IACS

Otherwise Unclassified Properties

Base Metal Price

9.5 % relative

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

1190 L/kg 140 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

24 MJ/m3

Resilience: Unit (Modulus of Resilience)

370 kJ/m3

Stiffness to Weight: Axial

14 points

Stiffness to Weight: Bending

50 points

Strength to Weight: Axial

29 points

Strength to Weight: Bending

35 points

Thermal Diffusivity

78 mm2/s

Thermal Shock Resistance

13 points

Alloy Composition

Among wrought aluminum alloys, the composition of 6106 aluminum is notable for containing comparatively high amounts of magnesium (Mg) and silicon (Si). Magnesium promotes hardenability through both heat treatment and strain hardening mechanisms. It also increases susceptibility to intergranular corrosion. Silicon is used to increase strength at the expense of ductility. It also lowers the melting temperature and raises the fluidity of the alloy.

Aluminum (Al) 97.2 to 99.3
Magnesium (Mg) 0.4 to 0.8
Silicon (Si) 0.3 to 0.6
Iron (Fe) 0 to 0.35
Manganese (Mn) 0.050 to 0.2
Copper (Cu) 0 to 0.25
Chromium (Cr) 0 to 0.2
Zinc (Zn) 0 to 0.15
Titanium (Ti) 0 to 0.1
Residuals 0 to 0.15

All values are % weight. Ranges represent what is permitted under applicable standards.

Followup Questions

Similar Alloys

Further Reading

EN 755-2: Aluminium and aluminium alloys. Extruded rod/bar, tube and profiles. Mechanical properties

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

CRC Materials Science and Engineering Handbook, 4th ed., James F. Shackelford et al. (editors), 2015