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7075-T6 Aluminum

7075-T6 aluminum is 7075 aluminum in the T6 temper. To achieve this temper, the metal is solution heat-treated and artificially aged until it meets standard mechanical property requirements. The graph bars on the material properties cards below compare 7075-T6 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

150

Elastic (Young's, Tensile) Modulus

70 GPa 10 x 106 psi

Elongation at Break

7.9 %

Fatigue Strength

160 MPa 23 x 103 psi

Poisson's Ratio

0.32

Shear Modulus

26 GPa 3.8 x 106 psi

Shear Strength

330 MPa 48 x 103 psi

Tensile Strength: Ultimate (UTS)

560 MPa 81 x 103 psi

Tensile Strength: Yield (Proof)

480 MPa 69 x 103 psi

Thermal Properties

Latent Heat of Fusion

380 J/g

Maximum Temperature: Mechanical

200 °C 400 °F

Melting Completion (Liquidus)

640 °C 1180 °F

Melting Onset (Solidus)

480 °C 890 °F

Specific Heat Capacity

870 J/kg-K 0.21 BTU/lb-°F

Thermal Conductivity

130 W/m-K 75 BTU/h-ft-°F

Thermal Expansion

23 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

33 % IACS

Electrical Conductivity: Equal Weight (Specific)

98 % IACS

Otherwise Unclassified Properties

Base Metal Price

10 % relative

Calomel Potential

-750 mV

Density

3.0 g/cm3 190 lb/ft3

Embodied Carbon

8.3 kg CO2/kg material

Embodied Energy

150 MJ/kg 64 x 103 BTU/lb

Embodied Water

1120 L/kg 130 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

42 MJ/m3

Resilience: Unit (Modulus of Resilience)

1630 kJ/m3

Stiffness to Weight: Axial

13 points

Stiffness to Weight: Bending

46 points

Strength to Weight: Axial

51 points

Strength to Weight: Bending

50 points

Thermal Diffusivity

50 m2/s

Thermal Shock Resistance

24 points

Alloy Composition

Aluminum (Al) 86.9 to 91.4
Zinc (Zn) 5.1 to 6.1
Magnesium (Mg) 2.1 to 2.9
Copper (Cu) 1.2 to 2.0
Iron (Fe) 0 to 0.5
Chromium (Cr) 0.18 to 0.28
Silicon (Si) 0 to 0.4
Manganese (Mn) 0 to 0.3
Zirconium (Zr) 0 to 0.25
Titanium (Ti) 0 to 0.2
Residuals 0 to 0.15

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

Followup Questions

Further Reading

EN 586-2: Aluminium and aluminium alloys. Forgings. Mechanical properties and additional property requirements.

ASTM B247: Standard Specification for Aluminum and Aluminum-Alloy Die Forgings, Hand Forgings, and Rolled Ring Forgings

ASTM B210: Standard Specification for Aluminum and Aluminum-Alloy Drawn Seamless Tubes

ASTM B211: Standard Specification for Aluminum and Aluminum-Alloy Bar, Rod, and Wire

ASTM B221: Standard Specification for Aluminum and Aluminum-Alloy Extruded Bars, Rods, Wire, Profiles, and Tubes

Environmental Degradation of Advanced and Traditional Engineering Materials, Lloyd H. Hihara et al., 2014.

EN 754-2: Aluminium and aluminium alloys. Cold drawn rod/bar and tube. Mechanical properties

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

Pressure Vessels: External Pressure Technology, 2nd ed., Carl T. F. Ross, 2011

EN 755-2: Aluminium and aluminium alloys. Extruded rod/bar, tube and profiles. Mechanical properties