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518.0 Aluminum vs. 7178 Aluminum

Both 518.0 aluminum and 7178 aluminum are aluminum alloys. They have a moderately high 91% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is 518.0 aluminum and the bottom bar is 7178 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 67
71
Elongation at Break, % 5.0
4.5 to 12
Fatigue Strength, MPa 140
120 to 210
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 25
27
Shear Strength, MPa 200
140 to 380
Tensile Strength: Ultimate (UTS), MPa 310
240 to 640
Tensile Strength: Yield (Proof), MPa 190
120 to 560

Thermal Properties

Latent Heat of Fusion, J/g 390
370
Maximum Temperature: Mechanical, °C 170
180
Melting Completion (Liquidus), °C 620
630
Melting Onset (Solidus), °C 560
480
Specific Heat Capacity, J/kg-K 900
860
Thermal Conductivity, W/m-K 98
130
Thermal Expansion, µm/m-K 24
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 24
31
Electrical Conductivity: Equal Weight (Specific), % IACS 81
91

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
10
Density, g/cm3 2.7
3.1
Embodied Carbon, kg CO2/kg material 9.4
8.2
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1160
1110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 14
24 to 52
Resilience: Unit (Modulus of Resilience), kJ/m3 270
110 to 2220
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 51
45
Strength to Weight: Axial, points 32
21 to 58
Strength to Weight: Bending, points 38
28 to 54
Thermal Diffusivity, mm2/s 40
47
Thermal Shock Resistance, points 14
10 to 28

Alloy Composition

Aluminum (Al), % 88.1 to 92.5
85.4 to 89.5
Chromium (Cr), % 0
0.18 to 0.28
Copper (Cu), % 0 to 0.25
1.6 to 2.4
Iron (Fe), % 0 to 1.8
0 to 0.5
Magnesium (Mg), % 7.5 to 8.5
2.4 to 3.1
Manganese (Mn), % 0 to 0.35
0 to 0.3
Nickel (Ni), % 0 to 0.15
0
Silicon (Si), % 0 to 0.35
0 to 0.4
Tin (Sn), % 0 to 0.15
0
Titanium (Ti), % 0
0 to 0.2
Zinc (Zn), % 0 to 0.15
6.3 to 7.3
Residuals, % 0
0 to 0.15