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7010 (AlZn6MgCu, A97010) Aluminum

7010 aluminum is a 7000-series aluminum alloy: the main alloying addition is zinc and it is formulated for primary forming into wrought products. 7010 is the Aluminum Association (AA) designation for this material. In European standards, it will be given as EN AW-7010. AlZn6MgCu is the EN chemical designation. A97010 is the UNS number. Additionally, the British Standard (BS) designation is DTD5130.

It originally received its standard designation in 1975.

The properties of 7010 aluminum include ten common variations. This page shows summary ranges across all of them. For more specific values, follow the links immediately below. The graph bars on the material properties cards further below compare 7010 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

Elastic (Young's, Tensile) Modulus

70 GPa 10 x 106 psi

Elongation at Break

3.9 to 6.8 %

Fatigue Strength

160 to 190 MPa 23 to 28 x 103 psi

Poisson's Ratio

0.32

Shear Modulus

26 GPa 3.8 x 106 psi

Shear Strength

300 to 340 MPa 44 to 50 x 103 psi

Tensile Strength: Ultimate (UTS)

520 to 590 MPa 75 to 86 x 103 psi

Tensile Strength: Yield (Proof)

410 to 540 MPa 60 to 79 x 103 psi

Thermal Properties

Latent Heat of Fusion

380 J/g

Maximum Temperature: Mechanical

200 °C 380 °F

Melting Completion (Liquidus)

630 °C 1170 °F

Melting Onset (Solidus)

480 °C 890 °F

Specific Heat Capacity

860 J/kg-K 0.21 BTU/lb-°F

Thermal Conductivity

150 W/m-K 88 BTU/h-ft-°F

Thermal Expansion

24 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

40 % IACS

Electrical Conductivity: Equal Weight (Specific)

120 % IACS

Otherwise Unclassified Properties

Base Metal Price

10 % relative

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)

22 to 33 MJ/m3

Resilience: Unit (Modulus of Resilience)

1230 to 2130 kJ/m3

Stiffness to Weight: Axial

13 points

Stiffness to Weight: Bending

45 points

Strength to Weight: Axial

47 to 54 points

Strength to Weight: Bending

47 to 52 points

Thermal Diffusivity

58 m2/s

Thermal Shock Resistance

22 to 26 points

Alloy Composition

Among wrought aluminum alloys, the composition of 7010 aluminum is notable for containing a comparatively high amount of zinc (Zn) and including nickel (Ni). Zinc is used to achieve significant increases in strength, at the cost of increased susceptibility to stress corrosion cracking. Among other things, this limits weldability. Nickel is used to increase mechanical strength at elevated temperatures, and to reduce thermal expansion. However, it can increase susceptibility to pitting corrosion in certain alloys.

Aluminum (Al) 87.9 to 90.6
Zinc (Zn) 5.7 to 6.7
Magnesium (Mg) 2.1 to 2.6
Copper (Cu) 1.5 to 2.0
Zirconium (Zr) 0.1 to 0.16
Iron (Fe) 0 to 0.15
Silicon (Si) 0 to 0.12
Manganese (Mn) 0 to 0.1
Titanium (Ti) 0 to 0.060
Chromium (Cr) 0 to 0.050
Nickel (Ni) 0 to 0.050
Residuals 0 to 0.15

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

Followup Questions

Similar Alloys

Further Reading

Handbook of Aluminum vol. 2: Alloy Production and Materials Manufacturing, George Totten and D. Scott MacKenzie (editors), 2003

EN 485-2: Aluminium and aluminium alloys. Sheet, strip and plate. Mechanical properties

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

EN 573-3: Aluminium and aluminium alloys. Chemical composition and form of wrought products. Chemical composition and form of products