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5019 Aluminum vs. 7178 Aluminum

Both 5019 aluminum and 7178 aluminum are aluminum alloys. They have a moderately high 91% of their average alloy composition in common.

For each property being compared, the top bar is 5019 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, % 2.2 to 18
4.5 to 12
Fatigue Strength, MPa 100 to 160
120 to 210
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 26
27
Shear Strength, MPa 170 to 210
140 to 380
Tensile Strength: Ultimate (UTS), MPa 280 to 360
240 to 640
Tensile Strength: Yield (Proof), MPa 120 to 300
120 to 560

Thermal Properties

Latent Heat of Fusion, J/g 400
370
Maximum Temperature: Mechanical, °C 180
180
Melting Completion (Liquidus), °C 640
630
Melting Onset (Solidus), °C 540
480
Specific Heat Capacity, J/kg-K 900
860
Thermal Conductivity, W/m-K 130
130
Thermal Expansion, µm/m-K 24
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 29
31
Electrical Conductivity: Equal Weight (Specific), % IACS 98
91

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
10
Density, g/cm3 2.7
3.1
Embodied Carbon, kg CO2/kg material 9.0
8.2
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1180
1110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.6 to 40
24 to 52
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 650
110 to 2220
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 51
45
Strength to Weight: Axial, points 29 to 38
21 to 58
Strength to Weight: Bending, points 35 to 42
28 to 54
Thermal Diffusivity, mm2/s 52
47
Thermal Shock Resistance, points 13 to 16
10 to 28

Alloy Composition

Aluminum (Al), % 91.5 to 95.3
85.4 to 89.5
Chromium (Cr), % 0 to 0.2
0.18 to 0.28
Copper (Cu), % 0 to 0.1
1.6 to 2.4
Iron (Fe), % 0 to 0.5
0 to 0.5
Magnesium (Mg), % 4.5 to 5.6
2.4 to 3.1
Manganese (Mn), % 0.1 to 0.6
0 to 0.3
Silicon (Si), % 0 to 0.4
0 to 0.4
Titanium (Ti), % 0 to 0.2
0 to 0.2
Zinc (Zn), % 0 to 0.2
6.3 to 7.3
Residuals, % 0
0 to 0.15

Comparable Variants