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7116 Aluminum vs. Grade 9 Titanium

7116 aluminum belongs to the aluminum alloys classification, while grade 9 titanium belongs to the titanium alloys. 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 7116 aluminum and the bottom bar is grade 9 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
110
Elongation at Break, % 7.8
11 to 17
Fatigue Strength, MPa 160
330 to 480
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 26
40
Shear Strength, MPa 220
430 to 580
Tensile Strength: Ultimate (UTS), MPa 370
700 to 960
Tensile Strength: Yield (Proof), MPa 330
540 to 830

Thermal Properties

Latent Heat of Fusion, J/g 380
410
Maximum Temperature: Mechanical, °C 170
330
Melting Completion (Liquidus), °C 640
1640
Melting Onset (Solidus), °C 520
1590
Specific Heat Capacity, J/kg-K 880
550
Thermal Conductivity, W/m-K 150
8.1
Thermal Expansion, µm/m-K 24
9.1

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 46
1.4
Electrical Conductivity: Equal Weight (Specific), % IACS 140
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
37
Density, g/cm3 2.9
4.5
Embodied Carbon, kg CO2/kg material 8.2
36
Embodied Energy, MJ/kg 150
580
Embodied Water, L/kg 1150
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 28
89 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 790
1380 to 3220
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 47
35
Strength to Weight: Axial, points 35
43 to 60
Strength to Weight: Bending, points 39
39 to 48
Thermal Diffusivity, mm2/s 58
3.3
Thermal Shock Resistance, points 16
52 to 71

Alloy Composition

Aluminum (Al), % 91.5 to 94.5
2.5 to 3.5
Carbon (C), % 0
0 to 0.080
Copper (Cu), % 0.5 to 1.1
0
Gallium (Ga), % 0 to 0.030
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 0 to 0.3
0 to 0.25
Magnesium (Mg), % 0.8 to 1.4
0
Manganese (Mn), % 0 to 0.050
0
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.15
Silicon (Si), % 0 to 0.15
0
Titanium (Ti), % 0 to 0.050
92.6 to 95.5
Vanadium (V), % 0 to 0.050
2.0 to 3.0
Zinc (Zn), % 4.2 to 5.2
0
Residuals, % 0
0 to 0.4