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5050 Aluminum vs. 7178 Aluminum

Both 5050 aluminum and 7178 aluminum are aluminum alloys. They have 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 5050 aluminum and the bottom bar is 7178 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
71
Elongation at Break, % 1.7 to 22
4.5 to 12
Fatigue Strength, MPa 45 to 100
120 to 210
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 26
27
Shear Strength, MPa 91 to 140
140 to 380
Tensile Strength: Ultimate (UTS), MPa 140 to 250
240 to 640
Tensile Strength: Yield (Proof), MPa 50 to 210
120 to 560

Thermal Properties

Latent Heat of Fusion, J/g 400
370
Maximum Temperature: Mechanical, °C 180
180
Melting Completion (Liquidus), °C 650
630
Melting Onset (Solidus), °C 630
480
Specific Heat Capacity, J/kg-K 900
860
Thermal Conductivity, W/m-K 190
130
Thermal Expansion, µm/m-K 24
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 50
31
Electrical Conductivity: Equal Weight (Specific), % IACS 170
91

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
10
Density, g/cm3 2.7
3.1
Embodied Carbon, kg CO2/kg material 8.4
8.2
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1190
1110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.1 to 24
24 to 52
Resilience: Unit (Modulus of Resilience), kJ/m3 18 to 330
110 to 2220
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
45
Strength to Weight: Axial, points 15 to 26
21 to 58
Strength to Weight: Bending, points 22 to 33
28 to 54
Thermal Diffusivity, mm2/s 79
47
Thermal Shock Resistance, points 6.3 to 11
10 to 28

Alloy Composition

Aluminum (Al), % 96.3 to 98.9
85.4 to 89.5
Chromium (Cr), % 0 to 0.1
0.18 to 0.28
Copper (Cu), % 0 to 0.2
1.6 to 2.4
Iron (Fe), % 0 to 0.7
0 to 0.5
Magnesium (Mg), % 1.1 to 1.8
2.4 to 3.1
Manganese (Mn), % 0 to 0.1
0 to 0.3
Silicon (Si), % 0 to 0.4
0 to 0.4
Titanium (Ti), % 0
0 to 0.2
Zinc (Zn), % 0 to 0.25
6.3 to 7.3
Residuals, % 0
0 to 0.15

Comparable Variants