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5049-O Aluminum vs. 7178-O Aluminum

Both 5049-O aluminum and 7178-O aluminum are aluminum alloys. Both are furnished in the annealed condition. 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 5049-O aluminum and the bottom bar is 7178-O aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
71
Elongation at Break, % 18
12
Fatigue Strength, MPa 96
120
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 26
27
Shear Strength, MPa 130
140
Tensile Strength: Ultimate (UTS), MPa 210
240
Tensile Strength: Yield (Proof), MPa 91
120

Thermal Properties

Latent Heat of Fusion, J/g 400
370
Maximum Temperature: Mechanical, °C 190
180
Melting Completion (Liquidus), °C 650
630
Melting Onset (Solidus), °C 620
480
Specific Heat Capacity, J/kg-K 900
860
Thermal Conductivity, W/m-K 140
130
Thermal Expansion, µm/m-K 24
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 35
31
Electrical Conductivity: Equal Weight (Specific), % IACS 110
91

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
10
Density, g/cm3 2.7
3.1
Embodied Carbon, kg CO2/kg material 8.5
8.2
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1180
1110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 31
24
Resilience: Unit (Modulus of Resilience), kJ/m3 59
110
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
45
Strength to Weight: Axial, points 22
21
Strength to Weight: Bending, points 29
28
Thermal Diffusivity, mm2/s 56
47
Thermal Shock Resistance, points 9.3
10

Alloy Composition

Aluminum (Al), % 94.7 to 97.9
85.4 to 89.5
Chromium (Cr), % 0 to 0.3
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), % 1.6 to 2.5
2.4 to 3.1
Manganese (Mn), % 0.5 to 1.1
0 to 0.3
Silicon (Si), % 0 to 0.4
0 to 0.4
Titanium (Ti), % 0 to 0.1
0 to 0.2
Zinc (Zn), % 0 to 0.2
6.3 to 7.3
Residuals, % 0
0 to 0.15