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6061 (AlMg1SiCu, 3.3214, H20, A96061) Aluminum

6061 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. 6061 is the Aluminum Association (AA) designation for this material. In European standards, it will typically be given as EN AW-6061. AlMg1SiCu is the EN chemical designation. A96061 is the UNS number. And H20 is the British Standard (BS) designation.

It has been in use since 1935, but has only received its standard designation in 1954. This material is well established. The Further Reading section below cites a number of published standards, and that list is not necessarily exhaustive.

It has fifteen common variants, each represented as a separate material. The material properties section shows ranges encompassing all variants. To see the details of each variant on a separate page, follow the links in the Variant Materials section further below.

Mechanical Properties

Graph bars compare 6061 aluminum to other materials. From top to bottom: AA 6000 series (aluminum-magnesium-silicon wrought alloy), aluminum alloys, and the entire database.

Elastic (Young's, Tensile) Modulus

71 GPa 10 x 106 psi

Elongation at Break

8.0 to 20 %

Modulus of Resilience (Unit Resilience)

39 to 1000 kJ/m3

Poisson's Ratio

0.33

Shear Modulus

26 GPa 3.8 x 106 psi

Strength to Weight Ratio

47 to 150 kN-m/kg

Tensile Strength: Ultimate (UTS)

130 to 420 MPa 18 to 61 x 103 psi

Tensile Strength: Yield (Proof)

74 to 380 MPa 11 to 55 x 103 psi

Unit Rupture Work (Ultimate Resilience)

21 to 41 MJ/m3

Thermal Properties

Melting Onset (Solidus)

580 °C 1080 °F

Specific Heat Capacity

900 J/kg-K 0.21 BTU/lb-°F

Thermal Conductivity

170 W/m-K 97 BTU/h-ft-°F

Thermal Diffusivity

68 m2/s

Thermal Expansion

22 µm/m-K

Other Material Properties

Base Metal Price

16 % relative

Calomel Potential

-740 mV

Density

2.7 g/cm3 170 lb/ft3

Electrical Conductivity: Equal Volume

43 % IACS

Electrical Conductivity: Equal Weight (Specific)

140 % IACS

Electrical Resistivity Order of Magnitude

-7.0 10x Ω-m

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

Alloy Composition

Aluminum (Al) 95.9 to 98.6
Magnesium (Mg) 0.8 to 1.2
Silicon (Si) 0.4 to 0.8
Iron (Fe) 0 to 0.7
Copper (Cu) 0.15 to 0.4
Chromium (Cr) 0.040 to 0.35
Zinc (Zn) 0 to 0.25
Manganese (Mn) 0 to 0.15
Titanium (Ti) 0 to 0.15
Residuals 0 to 0.15

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

Followup Questions

Publications

Variant Materials

Similar Alloys

Further Reading

Aluminum Standards and Data, Aluminum Association Inc., 2013

ASTM B209: Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate

ASTM B210: Standard Specification for Aluminum and Aluminum-Alloy Drawn Seamless Tubes

ASTM B211: Standard Specification for Aluminum and Aluminum-Alloy Bar, Rod, and Wire

ASTM B221: Standard Specification for Aluminum and Aluminum-Alloy Extruded Bars, Rods, Wire, Profiles, and Tubes

ASTM B247: Standard Specification for Aluminum and Aluminum-Alloy Die Forgings, Hand Forgings, and Rolled Ring Forgings

ASTM B308: Standard Specification for Aluminum-Alloy 6061-T6 Standard Structural Profiles

ASTM B483: Standard Specification for Aluminum and Aluminum-Alloy Drawn Tube and Pipe for General Purpose Applications

ASTM B547: Standard Specification for Aluminum and Aluminum-Alloy Formed and Arc-Welded Round Tube

EN 485-2: Aluminium and aluminium alloys. Sheet, strip and plate. Mechanical properties