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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. H20 is the British Standard (BS) designation. A96061 is the UNS number. Additionally, the AFNOR designation is A-G1SUC. Older literature may refer to this material as CSA GS11N, but this is now discouraged.

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.

The properties of 6061 aluminum include 16 common variations. The property values on this page show 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 6061 aluminum to: 6000-series alloys (top), all aluminum alloys (middle), and the entire database (bottom).

Mechanical Properties

Elastic (Young's, Tensile) Modulus

69 GPa 10 x 106 psi

Elongation at Break

3.4 to 20 %

Fatigue Strength

58 to 110 MPa 8.4 to 16 x 103 psi

Poisson's Ratio

0.33

Shear Modulus

26 GPa 3.8 x 106 psi

Shear Strength

84 to 210 MPa 12 to 30 x 103 psi

Tensile Strength: Ultimate (UTS)

130 to 410 MPa 19 to 60 x 103 psi

Tensile Strength: Yield (Proof)

76 to 370 MPa 11 to 54 x 103 psi

Thermal Properties

Melting Completion (Liquidus)

650 °C 1190 °F

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 Expansion

24 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

43 % IACS

Electrical Conductivity: Equal Weight (Specific)

140 % 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)

3.8 to 81 MJ/m3

Resilience: Unit (Modulus of Resilience)

42 to 1000 kJ/m3

Stiffness to Weight: Axial

14 points

Stiffness to Weight: Bending

50 points

Strength to Weight: Axial

13 to 42 points

Strength to Weight: Bending

21 to 45 points

Thermal Diffusivity

68 m2/s

Thermal Shock Resistance

5.7 to 18 points

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

Similar Alloys

Further Reading

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

EN 573-3: Aluminium and aluminium alloys. Chemical composition and form of wrought products. Chemical composition and form of products

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

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