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5056 Aluminum vs. 7178 Aluminum

Both 5056 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 5056 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, % 4.9 to 31
4.5 to 12
Fatigue Strength, MPa 140 to 200
120 to 210
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 25
27
Shear Strength, MPa 170 to 240
140 to 380
Tensile Strength: Ultimate (UTS), MPa 290 to 460
240 to 640
Tensile Strength: Yield (Proof), MPa 150 to 410
120 to 560

Thermal Properties

Latent Heat of Fusion, J/g 400
370
Maximum Temperature: Mechanical, °C 190
180
Melting Completion (Liquidus), °C 640
630
Melting Onset (Solidus), °C 570
480
Specific Heat Capacity, J/kg-K 910
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 99
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 12 to 140
24 to 52
Resilience: Unit (Modulus of Resilience), kJ/m3 170 to 1220
110 to 2220
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 51
45
Strength to Weight: Axial, points 30 to 48
21 to 58
Strength to Weight: Bending, points 36 to 50
28 to 54
Thermal Diffusivity, mm2/s 53
47
Thermal Shock Resistance, points 13 to 20
10 to 28

Alloy Composition

Aluminum (Al), % 93 to 95.4
85.4 to 89.5
Chromium (Cr), % 0.050 to 0.2
0.18 to 0.28
Copper (Cu), % 0 to 0.1
1.6 to 2.4
Iron (Fe), % 0 to 0.4
0 to 0.5
Magnesium (Mg), % 4.5 to 5.6
2.4 to 3.1
Manganese (Mn), % 0.050 to 0.2
0 to 0.3
Silicon (Si), % 0 to 0.3
0 to 0.4
Titanium (Ti), % 0
0 to 0.2
Zinc (Zn), % 0 to 0.1
6.3 to 7.3
Residuals, % 0
0 to 0.15

Comparable Variants