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7108A Aluminum vs. 7049A Aluminum

Both 7108A aluminum and 7049A aluminum are aluminum alloys. They have a moderately high 94% of their average alloy composition in common.

For each property being compared, the top bar is 7108A aluminum and the bottom bar is 7049A aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
71
Elongation at Break, % 11 to 13
5.0 to 5.7
Fatigue Strength, MPa 120 to 130
180
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 26
27
Shear Strength, MPa 210
340 to 350
Tensile Strength: Ultimate (UTS), MPa 350
580 to 590
Tensile Strength: Yield (Proof), MPa 290 to 300
500 to 530

Thermal Properties

Latent Heat of Fusion, J/g 380
370
Maximum Temperature: Mechanical, °C 210
200
Melting Completion (Liquidus), °C 630
640
Melting Onset (Solidus), °C 520
430
Specific Heat Capacity, J/kg-K 870
850
Thermal Conductivity, W/m-K 150
130
Thermal Expansion, µm/m-K 24
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 36
40
Electrical Conductivity: Equal Weight (Specific), % IACS 110
120

Otherwise Unclassified Properties

Base Metal Price, % relative 10
10
Density, g/cm3 2.9
3.1
Embodied Carbon, kg CO2/kg material 8.3
8.2
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1150
1100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 38 to 44
28 to 32
Resilience: Unit (Modulus of Resilience), kJ/m3 610 to 640
1800 to 1990
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 47
44
Strength to Weight: Axial, points 33 to 34
52 to 53
Strength to Weight: Bending, points 38
50 to 51
Thermal Diffusivity, mm2/s 59
50
Thermal Shock Resistance, points 15 to 16
25

Alloy Composition

Aluminum (Al), % 91.6 to 94.4
84.6 to 89.5
Chromium (Cr), % 0 to 0.040
0.050 to 0.25
Copper (Cu), % 0 to 0.050
1.2 to 1.9
Gallium (Ga), % 0 to 0.030
0
Iron (Fe), % 0 to 0.3
0 to 0.5
Magnesium (Mg), % 0.7 to 1.5
2.1 to 3.1
Manganese (Mn), % 0 to 0.050
0 to 0.5
Silicon (Si), % 0 to 0.2
0 to 0.4
Titanium (Ti), % 0 to 0.030
0 to 0.25
Zinc (Zn), % 4.8 to 5.8
7.2 to 8.4
Zirconium (Zr), % 0.15 to 0.25
0 to 0.25
Residuals, % 0
0 to 0.15

Comparable Variants