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7108 Aluminum vs. Titanium 6-7

7108 aluminum belongs to the aluminum alloys classification, while titanium 6-7 belongs to the titanium alloys. There are 26 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is 7108 aluminum and the bottom bar is titanium 6-7.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
120
Elongation at Break, % 11
11
Fatigue Strength, MPa 120
530
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
45
Shear Strength, MPa 210
610
Tensile Strength: Ultimate (UTS), MPa 350
1020
Tensile Strength: Yield (Proof), MPa 290
900

Thermal Properties

Latent Heat of Fusion, J/g 380
410
Maximum Temperature: Mechanical, °C 210
300
Melting Completion (Liquidus), °C 630
1700
Melting Onset (Solidus), °C 530
1650
Specific Heat Capacity, J/kg-K 880
520
Thermal Expansion, µm/m-K 24
9.3

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
75
Density, g/cm3 2.9
5.1
Embodied Carbon, kg CO2/kg material 8.3
34
Embodied Energy, MJ/kg 150
540
Embodied Water, L/kg 1150
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 38
110
Resilience: Unit (Modulus of Resilience), kJ/m3 620
3460
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 47
32
Strength to Weight: Axial, points 34
56
Strength to Weight: Bending, points 38
44
Thermal Shock Resistance, points 16
66

Alloy Composition

Aluminum (Al), % 92.4 to 94.7
5.5 to 6.5
Carbon (C), % 0
0 to 0.080
Copper (Cu), % 0 to 0.050
0
Hydrogen (H), % 0
0 to 0.0090
Iron (Fe), % 0 to 0.1
0 to 0.25
Magnesium (Mg), % 0.7 to 1.4
0
Manganese (Mn), % 0 to 0.050
0
Molybdenum (Mo), % 0
6.5 to 7.5
Niobium (Nb), % 0
6.5 to 7.5
Nitrogen (N), % 0
0 to 0.050
Oxygen (O), % 0
0 to 0.2
Silicon (Si), % 0 to 0.1
0
Tantalum (Ta), % 0
0 to 0.5
Titanium (Ti), % 0 to 0.050
84.9 to 88
Zinc (Zn), % 4.5 to 5.5
0
Zirconium (Zr), % 0.12 to 0.25
0
Residuals, % 0 to 0.15
0