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2017-T351 Aluminum

2017-T351 aluminum is 2017 aluminum in the T351 temper. To achieve this temper, the metal is solution heat-treated, stress relieved, then naturally aged. The stress relief is accomplished by stretching the metal by an amount that depends on the type of standard wrought product being made (sheet, plate, bar, or forging).

It has the second lowest ductility compared to the other variants of 2017 aluminum.

The graph bars on the material properties cards below compare 2017-T351 aluminum to: 2000-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

71 GPa 10 x 106 psi

Elongation at Break

13 %

Fatigue Strength

110 MPa 15 x 103 psi

Poisson's Ratio

0.33

Shear Modulus

27 GPa 3.9 x 106 psi

Shear Strength

250 MPa 37 x 103 psi

Tensile Strength: Ultimate (UTS)

420 MPa 61 x 103 psi

Tensile Strength: Yield (Proof)

250 MPa 36 x 103 psi

Thermal Properties

Latent Heat of Fusion

390 J/g

Maximum Temperature: Mechanical

190 °C 380 °F

Melting Completion (Liquidus)

640 °C 1180 °F

Melting Onset (Solidus)

510 °C 950 °F

Specific Heat Capacity

880 J/kg-K 0.21 BTU/lb-°F

Thermal Conductivity

150 W/m-K 86 BTU/h-ft-°F

Thermal Expansion

24 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

38 % IACS

Electrical Conductivity: Equal Weight (Specific)

110 % IACS

Otherwise Unclassified Properties

Base Metal Price

10 % relative

Density

3.0 g/cm3 190 lb/ft3

Embodied Carbon

8.0 kg CO2/kg material

Embodied Energy

150 MJ/kg 64 x 103 BTU/lb

Embodied Water

1140 L/kg 140 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

49 MJ/m3

Resilience: Unit (Modulus of Resilience)

420 kJ/m3

Stiffness to Weight: Axial

13 points

Stiffness to Weight: Bending

46 points

Strength to Weight: Axial

39 points

Strength to Weight: Bending

42 points

Thermal Diffusivity

56 mm2/s

Thermal Shock Resistance

18 points

Alloy Composition

Aluminum (Al)Al 91.6 to 95.5
Copper (Cu)Cu 3.5 to 4.5
Manganese (Mn)Mn 0.4 to 1.0
Magnesium (Mg)Mg 0.4 to 0.8
Silicon (Si)Si 0.2 to 0.8
Iron (Fe)Fe 0 to 0.7
Zinc (Zn)Zn 0 to 0.25
Titanium (Ti)Ti 0 to 0.15
Chromium (Cr)Cr 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 B211: Standard Specification for Aluminum and Aluminum-Alloy Bar, Rod, and Wire

Aerospace Materials, Brian Cantor et al. (editors), 2001

Aluminum Standards and Data, Aluminum Association Inc., 2013

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

Properties and Selection: Nonferrous Alloys and Special-Purpose Materials, ASM Handbook vol. 2, ASM International, 1993