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5086 (AlMg4, 3.3545, A95086) Aluminum

5086 aluminum is a 5000-series aluminum alloy: the main alloying addition is magnesium, and it is formulated for primary forming into wrought products. 5086 is the Aluminum Association (AA) designation for this material. In European standards, it will be given as EN AW-5086. AlMg4 is the EN chemical designation. A95086 is the UNS number. Additionally, the AFNOR (French) designation is A-G4MC.

It originally 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 5086 aluminum include 18 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 5086 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

Brinell Hardness

65 to 100

Elastic (Young's, Tensile) Modulus

68 GPa 9.9 x 106 psi

Elongation at Break

1.7 to 20 %

Fatigue Strength

88 to 180 MPa 13 to 26 x 103 psi

Poisson's Ratio

0.33

Shear Modulus

26 GPa 3.7 x 106 psi

Shear Strength

160 to 230 MPa 23 to 33 x 103 psi

Tensile Strength: Ultimate (UTS)

270 to 390 MPa 39 to 57 x 103 psi

Tensile Strength: Yield (Proof)

110 to 320 MPa 16 to 47 x 103 psi

Thermal Properties

Latent Heat of Fusion

400 J/g

Maximum Temperature: Corrosion

65 °C 150 °F

Maximum Temperature: Mechanical

190 °C 370 °F

Melting Completion (Liquidus)

640 °C 1180 °F

Melting Onset (Solidus)

590 °C 1090 °F

Specific Heat Capacity

900 J/kg-K 0.22 BTU/lb-°F

Thermal Conductivity

130 W/m-K 73 BTU/h-ft-°F

Thermal Expansion

24 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

31 % IACS

Electrical Conductivity: Equal Weight (Specific)

100 % IACS

Otherwise Unclassified Properties

Base Metal Price

9.5 % relative

Calomel Potential

-760 mV

Density

2.7 g/cm3 170 lb/ft3

Embodied Carbon

8.8 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)

5.8 to 42 MJ/m3

Resilience: Unit (Modulus of Resilience)

86 to 770 kJ/m3

Stiffness to Weight: Axial

14 points

Stiffness to Weight: Bending

50 points

Strength to Weight: Axial

28 to 40 points

Strength to Weight: Bending

34 to 44 points

Thermal Diffusivity

52 mm2/s

Thermal Shock Resistance

12 to 17 points

Alloy Composition

Among wrought aluminum alloys, the composition of 5086 aluminum is notable for containing a comparatively high amount of magnesium (Mg). Magnesium promotes hardenability through both heat treatment and strain hardening mechanisms. It also increases susceptibility to intergranular corrosion.

Aluminum (Al) 93 to 96.3
Magnesium (Mg) 3.5 to 4.5
Manganese (Mn) 0.2 to 0.7
Iron (Fe) 0 to 0.5
Silicon (Si) 0 to 0.4
Chromium (Cr) 0.050 to 0.25
Zinc (Zn) 0 to 0.25
Titanium (Ti) 0 to 0.15
Copper (Cu) 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

ASTM B928: Standard Specification for High Magnesium Aluminum-Alloy Sheet and Plate for Marine Service

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

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

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

EN 754-2: Aluminium and aluminium alloys. Cold drawn rod/bar and tube. Mechanical properties

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

Pressure Vessels: External Pressure Technology, 2nd ed., Carl T. F. Ross, 2011

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

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

Aluminum Standards and Data, Aluminum Association Inc., 2013