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5070 Aluminum vs. 7175 Aluminum

Both 5070 aluminum and 7175 aluminum are aluminum alloys. They have a moderately high 93% of their average alloy composition in common.

For each property being compared, the top bar is 5070 aluminum and the bottom bar is 7175 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
70
Elongation at Break, % 20
3.8 to 5.9
Fatigue Strength, MPa 150
150 to 180
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 26
26
Shear Strength, MPa 190
290 to 330
Tensile Strength: Ultimate (UTS), MPa 300
520 to 570
Tensile Strength: Yield (Proof), MPa 140
430 to 490

Thermal Properties

Latent Heat of Fusion, J/g 390
380
Maximum Temperature: Mechanical, °C 190
180
Melting Completion (Liquidus), °C 640
640
Melting Onset (Solidus), °C 550
480
Specific Heat Capacity, J/kg-K 900
870
Thermal Conductivity, W/m-K 130
140
Thermal Expansion, µm/m-K 24
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 31
33
Electrical Conductivity: Equal Weight (Specific), % IACS 100
99

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
10
Density, g/cm3 2.7
3.0
Embodied Carbon, kg CO2/kg material 8.8
8.2
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1170
1130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 51
18 to 29
Resilience: Unit (Modulus of Resilience), kJ/m3 150
1310 to 1730
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
46
Strength to Weight: Axial, points 31
48 to 52
Strength to Weight: Bending, points 37
48 to 51
Thermal Diffusivity, mm2/s 53
53
Thermal Shock Resistance, points 14
23 to 25

Alloy Composition


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Aluminum (Al), % 92.4 to 95.7
88 to 91.4
Chromium (Cr), % 0 to 0.3
0.18 to 0.28
Copper (Cu), % 0 to 0.25
1.2 to 2.0
Iron (Fe), % 0 to 0.4
0 to 0.2
Magnesium (Mg), % 3.5 to 4.5
2.1 to 2.9
Manganese (Mn), % 0.4 to 0.8
0 to 0.1
Silicon (Si), % 0 to 0.25
0 to 0.15
Titanium (Ti), % 0 to 0.15
0 to 0.1
Zinc (Zn), % 0.4 to 0.8
5.1 to 6.1
Residuals, % 0 to 0.15
0 to 0.15