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3105-O Aluminum

3105-O aluminum is 3105 aluminum in the annealed condition. It has the lowest strength and highest ductility compared to the other variants of 3105 aluminum. The graph bars on the material properties cards below compare 3105-O aluminum to: 3000-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

29

Elastic (Young's, Tensile) Modulus

69 GPa 10 x 106 psi

Elongation at Break

20 %

Fatigue Strength

52 MPa 7.5 x 103 psi

Poisson's Ratio

0.33

Shear Modulus

26 GPa 3.8 x 106 psi

Shear Strength

84 MPa 12 x 103 psi

Tensile Strength: Ultimate (UTS)

120 MPa 17 x 103 psi

Tensile Strength: Yield (Proof)

48 MPa 6.9 x 103 psi

Thermal Properties

Latent Heat of Fusion

400 J/g

Maximum Temperature: Mechanical

180 °C 360 °F

Melting Completion (Liquidus)

660 °C 1210 °F

Melting Onset (Solidus)

640 °C 1180 °F

Specific Heat Capacity

900 J/kg-K 0.21 BTU/lb-°F

Thermal Conductivity

170 W/m-K 98 BTU/h-ft-°F

Thermal Expansion

24 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

44 % IACS

Electrical Conductivity: Equal Weight (Specific)

140 % IACS

Otherwise Unclassified Properties

Base Metal Price

9.5 % relative

Calomel Potential

-750 mV

Density

2.8 g/cm3 170 lb/ft3

Embodied Carbon

8.2 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)

19 MJ/m3

Resilience: Unit (Modulus of Resilience)

16 kJ/m3

Stiffness to Weight: Axial

14 points

Stiffness to Weight: Bending

50 points

Strength to Weight: Axial

12 points

Strength to Weight: Bending

20 points

Thermal Diffusivity

68 mm2/s

Thermal Shock Resistance

5.2 points

Alloy Composition

Aluminum (Al)Al 96 to 99.5
Manganese (Mn)Mn 0.3 to 0.8
Magnesium (Mg)Mg 0.2 to 0.8
Iron (Fe)Fe 0 to 0.7
Silicon (Si)Si 0 to 0.6
Zinc (Zn)Zn 0 to 0.4
Copper (Cu)Cu 0 to 0.3
Chromium (Cr)Cr 0 to 0.2
Titanium (Ti)Ti 0 to 0.1
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

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

CRC Materials Science and Engineering Handbook, 4th ed., James F. Shackelford et al. (editors), 2015