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5254 (A95254) Aluminum

5254 aluminum is a 5000-series aluminum alloy: the main alloying addition is magnesium, and it is formulated for primary forming into wrought products. 5254 is the Aluminum Association (AA) designation for this material. In European standards, it will be given as EN AW-5254. A95254 is the UNS number.

It originally received its standard designation in 1954.

The properties of 5254 aluminum include fourteen 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 5254 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 9.8 x 106 psi

Elongation at Break

3.4 to 22 %

Fatigue Strength

110 to 160 MPa 15 to 23 x 103 psi

Poisson's Ratio

0.33

Shear Modulus

26 GPa 3.7 x 106 psi

Shear Strength

150 to 200 MPa 21 to 30 x 103 psi

Tensile Strength: Ultimate (UTS)

240 to 350 MPa 35 to 51 x 103 psi

Tensile Strength: Yield (Proof)

100 to 270 MPa 14 to 40 x 103 psi

Thermal Properties

Latent Heat of Fusion

400 J/g

Maximum Temperature: Mechanical

190 °C 370 °F

Melting Completion (Liquidus)

640 °C 1190 °F

Melting Onset (Solidus)

590 °C 1100 °F

Specific Heat Capacity

900 J/kg-K 0.22 BTU/lb-°F

Thermal Conductivity

130 W/m-K 72 BTU/h-ft-°F

Thermal Expansion

24 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

32 % IACS

Electrical Conductivity: Equal Weight (Specific)

110 % IACS

Otherwise Unclassified Properties

Base Metal Price

9.5 % relative

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)

11 to 41 MJ/m3

Resilience: Unit (Modulus of Resilience)

73 to 550 kJ/m3

Stiffness to Weight: Axial

14 points

Stiffness to Weight: Bending

51 points

Strength to Weight: Axial

25 to 37 points

Strength to Weight: Bending

32 to 41 points

Thermal Diffusivity

52 mm2/s

Thermal Shock Resistance

10 to 16 points

Alloy Composition

Among wrought aluminum alloys, the composition of 5254 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) 94.4 to 96.8
Magnesium (Mg) 3.1 to 3.9
Chromium (Cr) 0.15 to 0.35
Silicon (Si) 0 to 0.45
Iron (Fe) 0 to 0.45
Zinc (Zn) 0 to 0.2
Titanium (Ti) 0 to 0.050
Copper (Cu) 0 to 0.050
Manganese (Mn) 0 to 0.010
Residuals 0 to 0.15

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

Followup Questions

Similar Alloys

Further Reading

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

Aluminum Standards and Data, Aluminum Association Inc., 2013

ASM Specialty Handbook: Aluminum and Aluminum Alloys, J. R. Davis (editor), 1993

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