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7108A Aluminum vs. 4115 Aluminum

Both 7108A aluminum and 4115 aluminum are aluminum alloys. They have a moderately high 94% 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 7108A aluminum and the bottom bar is 4115 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
70
Elongation at Break, % 11 to 13
1.1 to 11
Fatigue Strength, MPa 120 to 130
39 to 76
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
26
Shear Strength, MPa 210
71 to 130
Tensile Strength: Ultimate (UTS), MPa 350
120 to 220
Tensile Strength: Yield (Proof), MPa 290 to 300
39 to 190

Thermal Properties

Latent Heat of Fusion, J/g 380
420
Maximum Temperature: Mechanical, °C 210
160
Melting Completion (Liquidus), °C 630
640
Melting Onset (Solidus), °C 520
590
Specific Heat Capacity, J/kg-K 870
900
Thermal Conductivity, W/m-K 150
160
Thermal Expansion, µm/m-K 24
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 36
41
Electrical Conductivity: Equal Weight (Specific), % IACS 110
140

Otherwise Unclassified Properties

Base Metal Price, % relative 10
9.5
Density, g/cm3 2.9
2.7
Embodied Carbon, kg CO2/kg material 8.3
8.1
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1150
1160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 38 to 44
2.1 to 10
Resilience: Unit (Modulus of Resilience), kJ/m3 610 to 640
11 to 270
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 47
50
Strength to Weight: Axial, points 33 to 34
12 to 23
Strength to Weight: Bending, points 38
20 to 30
Thermal Diffusivity, mm2/s 59
66
Thermal Shock Resistance, points 15 to 16
5.2 to 9.9

Alloy Composition

Aluminum (Al), % 91.6 to 94.4
94.6 to 97.4
Chromium (Cr), % 0 to 0.040
0
Copper (Cu), % 0 to 0.050
0.1 to 0.5
Gallium (Ga), % 0 to 0.030
0
Iron (Fe), % 0 to 0.3
0 to 0.7
Magnesium (Mg), % 0.7 to 1.5
0.1 to 0.5
Manganese (Mn), % 0 to 0.050
0.6 to 1.2
Silicon (Si), % 0 to 0.2
1.8 to 2.2
Titanium (Ti), % 0 to 0.030
0
Zinc (Zn), % 4.8 to 5.8
0 to 0.2
Zirconium (Zr), % 0.15 to 0.25
0
Residuals, % 0
0 to 0.15