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390.0 Aluminum vs. 7178 Aluminum

Both 390.0 aluminum and 7178 aluminum are aluminum alloys. They have 80% of their average alloy composition in common. There are 29 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 390.0 aluminum and the bottom bar is 7178 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 75
71
Elongation at Break, % 1.0
4.5 to 12
Fatigue Strength, MPa 76 to 110
120 to 210
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 28
27
Tensile Strength: Ultimate (UTS), MPa 280 to 300
240 to 640
Tensile Strength: Yield (Proof), MPa 240 to 270
120 to 560

Thermal Properties

Latent Heat of Fusion, J/g 640
370
Maximum Temperature: Mechanical, °C 170
180
Melting Completion (Liquidus), °C 650
630
Melting Onset (Solidus), °C 560
480
Specific Heat Capacity, J/kg-K 880
860
Thermal Conductivity, W/m-K 130
130
Thermal Expansion, µm/m-K 18
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 24 to 25
31
Electrical Conductivity: Equal Weight (Specific), % IACS 79 to 83
91

Otherwise Unclassified Properties

Base Metal Price, % relative 11
10
Density, g/cm3 2.7
3.1
Embodied Carbon, kg CO2/kg material 7.3
8.2
Embodied Energy, MJ/kg 130
150
Embodied Water, L/kg 950
1110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.7 to 2.9
24 to 52
Resilience: Unit (Modulus of Resilience), kJ/m3 380 to 470
110 to 2220
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 52
45
Strength to Weight: Axial, points 28 to 30
21 to 58
Strength to Weight: Bending, points 35 to 36
28 to 54
Thermal Diffusivity, mm2/s 56
47
Thermal Shock Resistance, points 14 to 15
10 to 28

Alloy Composition

Aluminum (Al), % 74.5 to 79.6
85.4 to 89.5
Chromium (Cr), % 0
0.18 to 0.28
Copper (Cu), % 4.0 to 5.0
1.6 to 2.4
Iron (Fe), % 0 to 1.3
0 to 0.5
Magnesium (Mg), % 0.45 to 0.65
2.4 to 3.1
Manganese (Mn), % 0 to 0.1
0 to 0.3
Silicon (Si), % 16 to 18
0 to 0.4
Titanium (Ti), % 0 to 0.2
0 to 0.2
Zinc (Zn), % 0 to 0.1
6.3 to 7.3
Residuals, % 0
0 to 0.15