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7049-T7352 Aluminum

7049-T7352 aluminum is 7049 aluminum in the T7352 temper. To achieve this temper, the metal is solution heat-treated, stress relieved, then stabilized by artificial overaging. The stress relief is accomplished by compressing the metal by 1-5%. The degree of overaging is chosen so as to maximize stress corrosion resistance.

The graph bars on the material properties cards below compare 7049-T7352 aluminum to: 7000-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

140

Elastic (Young's, Tensile) Modulus

70 GPa 10 x 106 psi

Elongation at Break

7.0 %

Fatigue Strength

160 MPa 24 x 103 psi

Poisson's Ratio

0.32

Shear Modulus

27 GPa 3.8 x 106 psi

Shear Strength

300 MPa 43 x 103 psi

Tensile Strength: Ultimate (UTS)

510 MPa 74 x 103 psi

Tensile Strength: Yield (Proof)

420 MPa 61 x 103 psi

Thermal Properties

Latent Heat of Fusion

370 J/g

Maximum Temperature: Mechanical

180 °C 350 °F

Melting Completion (Liquidus)

640 °C 1180 °F

Melting Onset (Solidus)

480 °C 890 °F

Specific Heat Capacity

860 J/kg-K 0.2 BTU/lb-°F

Thermal Conductivity

130 W/m-K 77 BTU/h-ft-°F

Thermal Expansion

23 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

36 % IACS

Electrical Conductivity: Equal Weight (Specific)

110 % IACS

Otherwise Unclassified Properties

Base Metal Price

10 % relative

Density

3.1 g/cm3 190 lb/ft3

Embodied Carbon

8.1 kg CO2/kg material

Embodied Energy

140 MJ/kg 62 x 103 BTU/lb

Embodied Water

1110 L/kg 130 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

34 MJ/m3

Resilience: Unit (Modulus of Resilience)

1270 kJ/m3

Stiffness to Weight: Axial

13 points

Stiffness to Weight: Bending

45 points

Strength to Weight: Axial

46 points

Strength to Weight: Bending

46 points

Thermal Diffusivity

51 mm2/s

Thermal Shock Resistance

22 points

Alloy Composition

Aluminum (Al)Al 85.7 to 89.5
Zinc (Zn)Zn 7.2 to 8.2
Magnesium (Mg)Mg 2.0 to 2.9
Copper (Cu)Cu 1.2 to 1.9
Iron (Fe)Fe 0 to 0.35
Chromium (Cr)Cr 0.1 to 0.22
Silicon (Si)Si 0 to 0.25
Manganese (Mn)Mn 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 B247: Standard Specification for Aluminum and Aluminum-Alloy Die Forgings, Hand Forgings, and Rolled Ring Forgings

Aluminum Standards and Data, Aluminum Association Inc., 2013

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