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Grade C-2 Titanium vs. 2017A Aluminum

Grade C-2 titanium belongs to the titanium alloys classification, while 2017A aluminum belongs to the aluminum alloys. There are 29 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is grade C-2 titanium and the bottom bar is 2017A aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
71
Elongation at Break, % 17
2.2 to 14
Fatigue Strength, MPa 200
92 to 130
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 40
27
Tensile Strength: Ultimate (UTS), MPa 390
200 to 460
Tensile Strength: Yield (Proof), MPa 310
110 to 290

Thermal Properties

Latent Heat of Fusion, J/g 420
390
Maximum Temperature: Mechanical, °C 320
220
Melting Completion (Liquidus), °C 1660
650
Melting Onset (Solidus), °C 1610
510
Specific Heat Capacity, J/kg-K 540
880
Thermal Conductivity, W/m-K 21
150
Thermal Expansion, µm/m-K 8.7
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.6
34
Electrical Conductivity: Equal Weight (Specific), % IACS 7.1
100

Otherwise Unclassified Properties

Base Metal Price, % relative 37
11
Density, g/cm3 4.5
3.0
Embodied Carbon, kg CO2/kg material 31
8.2
Embodied Energy, MJ/kg 510
150
Embodied Water, L/kg 110
1140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 61
6.7 to 53
Resilience: Unit (Modulus of Resilience), kJ/m3 460
90 to 570
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
46
Strength to Weight: Axial, points 24
19 to 42
Strength to Weight: Bending, points 26
26 to 44
Thermal Diffusivity, mm2/s 8.8
56
Thermal Shock Resistance, points 30
8.9 to 20

Alloy Composition

Aluminum (Al), % 0
91.3 to 95.5
Carbon (C), % 0 to 0.1
0
Chromium (Cr), % 0
0 to 0.1
Copper (Cu), % 0
3.5 to 4.5
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.2
0 to 0.7
Magnesium (Mg), % 0
0.4 to 1.0
Manganese (Mn), % 0
0.4 to 1.0
Nickel (Ni), % 0 to 0.050
0
Oxygen (O), % 0 to 0.4
0
Silicon (Si), % 0
0.2 to 0.8
Titanium (Ti), % 98.8 to 100
0 to 0.25
Zinc (Zn), % 0
0 to 0.25
Zirconium (Zr), % 0
0 to 0.25
Residuals, % 0
0 to 0.15