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5254-H18 Aluminum

5254-H18 aluminum is 5254 aluminum in the H18 temper. This is the strongest temper normally produced through the action of only strain hardening. It has the second lowest ductility compared to the other variants of 5254 aluminum.

The graph bars on the material properties cards below compare 5254-H18 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

4.5 %

Fatigue Strength

110 MPa 15 x 103 psi

Poisson's Ratio

0.33

Shear Modulus

26 GPa 3.7 x 106 psi

Shear Strength

200 MPa 30 x 103 psi

Tensile Strength: Ultimate (UTS)

350 MPa 51 x 103 psi

Tensile Strength: Yield (Proof)

270 MPa 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)

15 MJ/m3

Resilience: Unit (Modulus of Resilience)

550 kJ/m3

Stiffness to Weight: Axial

14 points

Stiffness to Weight: Bending

51 points

Strength to Weight: Axial

37 points

Strength to Weight: Bending

41 points

Thermal Diffusivity

52 mm2/s

Thermal Shock Resistance

16 points

Alloy Composition

Aluminum (Al)Al 94.4 to 96.8
Magnesium (Mg)Mg 3.1 to 3.9
Chromium (Cr)Cr 0.15 to 0.35
Silicon (Si)Si 0 to 0.45
Iron (Fe)Fe 0 to 0.45
Zinc (Zn)Zn 0 to 0.2
Titanium (Ti)Ti 0 to 0.050
Copper (Cu)Cu 0 to 0.050
Manganese (Mn)Mn 0 to 0.010
Residualsres. 0 to 0.15

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

Followup Questions

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