7475-T7351 Aluminum
7475-T7351 aluminum is 7475 aluminum in the T7351 temper. To achieve this temper, the metal is solution heat-treated, stress relieved, then stabilized by artificial overaging. 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). The degree of overaging is chosen so as to maximize stress corrosion resistance.
It has the lowest strength compared to the other variants of 7475 aluminum.
The graph bars on the material properties cards below compare 7475-T7351 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
12 %
Fatigue Strength
190 MPa 28 x 103 psi
Poisson's Ratio
0.32
Shear Modulus
26 GPa 3.8 x 106 psi
Shear Strength
320 MPa 46 x 103 psi
Tensile Strength: Ultimate (UTS)
530 MPa 76 x 103 psi
Tensile Strength: Yield (Proof)
440 MPa 64 x 103 psi
Thermal Properties
Latent Heat of Fusion
380 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
870 J/kg-K 0.21 BTU/lb-°F
Thermal Conductivity
160 W/m-K 94 BTU/h-ft-°F
Thermal Expansion
23 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
42 % 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
8.2 kg CO2/kg material
Embodied Energy
150 MJ/kg 63 x 103 BTU/lb
Embodied Water
1130 L/kg 130 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
58 MJ/m3
Resilience: Unit (Modulus of Resilience)
1390 kJ/m3
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
46 points
Strength to Weight: Axial
49 points
Strength to Weight: Bending
48 points
Thermal Diffusivity
63 mm2/s
Thermal Shock Resistance
23 points
Alloy Composition
| Al | 88.6 to 91.6 | |
| Zn | 5.1 to 6.2 | |
| Mg | 1.9 to 2.6 | |
| Cu | 1.2 to 1.9 | |
| Cr | 0.18 to 0.25 | |
| Fe | 0 to 0.12 | |
| Si | 0 to 0.1 | |
| Mn | 0 to 0.060 | |
| Ti | 0 to 0.060 | |
| res. | 0 to 0.15 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Further Reading
Aluminum Standards and Data, Aluminum Association Inc., 2013
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