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7075 Aluminum vs. A357.0 Aluminum

Both 7075 aluminum and A357.0 aluminum are aluminum alloys. They have a moderately high 90% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is 7075 aluminum and the bottom bar is A357.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
70
Elongation at Break, % 1.8 to 12
3.7
Fatigue Strength, MPa 110 to 190
100
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 26
26
Shear Strength, MPa 150 to 340
240
Tensile Strength: Ultimate (UTS), MPa 240 to 590
350
Tensile Strength: Yield (Proof), MPa 120 to 510
270

Thermal Properties

Latent Heat of Fusion, J/g 380
500
Maximum Temperature: Mechanical, °C 200
170
Melting Completion (Liquidus), °C 640
610
Melting Onset (Solidus), °C 480
560
Specific Heat Capacity, J/kg-K 870
900
Thermal Conductivity, W/m-K 130
160
Thermal Expansion, µm/m-K 23
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 33
40
Electrical Conductivity: Equal Weight (Specific), % IACS 98
140

Otherwise Unclassified Properties

Base Metal Price, % relative 10
12
Density, g/cm3 3.0
2.6
Embodied Carbon, kg CO2/kg material 8.3
8.2
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1120
1110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.8 to 44
12
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 1870
520
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 46
53
Strength to Weight: Axial, points 22 to 54
38
Strength to Weight: Bending, points 28 to 52
43
Thermal Diffusivity, mm2/s 50
68
Thermal Shock Resistance, points 10 to 25
17

Alloy Composition

Aluminum (Al), % 86.9 to 91.4
90.8 to 93
Beryllium (Be), % 0
0.040 to 0.070
Chromium (Cr), % 0.18 to 0.28
0
Copper (Cu), % 1.2 to 2.0
0 to 0.2
Iron (Fe), % 0 to 0.5
0 to 0.2
Magnesium (Mg), % 2.1 to 2.9
0.4 to 0.7
Manganese (Mn), % 0 to 0.3
0 to 0.1
Silicon (Si), % 0 to 0.4
6.5 to 7.5
Titanium (Ti), % 0 to 0.2
0.040 to 0.2
Zinc (Zn), % 5.1 to 6.1
0 to 0.1
Zirconium (Zr), % 0 to 0.25
0
Residuals, % 0
0 to 0.15