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5456 (AlMg5Mn1, A95456) Aluminum

5456 aluminum is a 5000-series aluminum alloy: the main alloying addition is magnesium, and it is formulated for primary forming into wrought products. 5456 is the Aluminum Association (AA) designation for this material. In European standards, it will be given as EN AW-5456. AlMg5Mn1 is the EN chemical designation. And A95456 is the UNS number.

It originally received its standard designation in 1956. 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 5456 aluminum include six 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 5456 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

Elastic (Young's, Tensile) Modulus

68 GPa 9.9 x 106 psi

Elongation at Break

11 to 18 %

Fatigue Strength

130 to 210 MPa 19 to 31 x 103 psi

Poisson's Ratio

0.33

Shear Modulus

26 GPa 3.7 x 106 psi

Shear Strength

190 to 210 MPa 28 to 30 x 103 psi

Tensile Strength: Ultimate (UTS)

320 to 340 MPa 46 to 50 x 103 psi

Tensile Strength: Yield (Proof)

150 to 250 MPa 22 to 37 x 103 psi

Thermal Properties

Latent Heat of Fusion

390 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)

570 °C 1060 °F

Specific Heat Capacity

900 J/kg-K 0.22 BTU/lb-°F

Thermal Conductivity

120 W/m-K 68 BTU/h-ft-°F

Thermal Expansion

24 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

29 % IACS

Electrical Conductivity: Equal Weight (Specific)

97 % IACS

Otherwise Unclassified Properties

Base Metal Price

9.5 % relative

Density

2.7 g/cm3 170 lb/ft3

Embodied Carbon

9.0 kg CO2/kg material

Embodied Energy

150 MJ/kg 66 x 103 BTU/lb

Embodied Water

1170 L/kg 140 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

33 to 46 MJ/m3

Resilience: Unit (Modulus of Resilience)

170 to 470 kJ/m3

Stiffness to Weight: Axial

14 points

Stiffness to Weight: Bending

50 points

Strength to Weight: Axial

33 to 35 points

Strength to Weight: Bending

38 to 40 points

Thermal Diffusivity

48 m2/s

Thermal Shock Resistance

14 to 15 points

Alloy Composition

Among wrought aluminum alloys, the composition of 5456 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) 92 to 94.8
Magnesium (Mg) 4.7 to 5.5
Manganese (Mn) 0.5 to 1.0
Iron (Fe) 0 to 0.4
Silicon (Si) 0 to 0.25
Chromium (Cr) 0.050 to 0.2
Zinc (Zn) 0 to 0.25
Titanium (Ti) 0 to 0.2
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 B221: Standard Specification for Aluminum and Aluminum-Alloy Extruded Bars, Rods, Wire, Profiles, and Tubes

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

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

Aluminum Standards and Data, Aluminum Association Inc., 2013

ISO 6361-2: Wrought aluminium and aluminium alloys - Sheets, strips and plates - Part 2: 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