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Grade 15 Titanium vs. 2011 Aluminum

Grade 15 titanium belongs to the titanium alloys classification, while 2011 aluminum belongs to the aluminum 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 grade 15 titanium and the bottom bar is 2011 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
71
Elongation at Break, % 20
8.5 to 18
Fatigue Strength, MPa 290
74 to 120
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 41
27
Shear Strength, MPa 340
190 to 250
Tensile Strength: Ultimate (UTS), MPa 540
310 to 420
Tensile Strength: Yield (Proof), MPa 430
140 to 310

Thermal Properties

Latent Heat of Fusion, J/g 420
390
Maximum Temperature: Mechanical, °C 320
190
Melting Completion (Liquidus), °C 1660
640
Melting Onset (Solidus), °C 1610
540
Specific Heat Capacity, J/kg-K 540
870
Thermal Conductivity, W/m-K 21
140 to 170
Thermal Expansion, µm/m-K 8.7
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.4
35 to 45
Electrical Conductivity: Equal Weight (Specific), % IACS 6.7
100 to 130

Otherwise Unclassified Properties

Base Metal Price, % relative 37
11
Density, g/cm3 4.5
3.1
Embodied Carbon, kg CO2/kg material 32
7.9
Embodied Energy, MJ/kg 520
150
Embodied Water, L/kg 210
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
29 to 52
Resilience: Unit (Modulus of Resilience), kJ/m3 870
140 to 680
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
44
Strength to Weight: Axial, points 33
27 to 37
Strength to Weight: Bending, points 33
32 to 40
Thermal Diffusivity, mm2/s 8.4
51 to 64
Thermal Shock Resistance, points 41
14 to 19

Alloy Composition

Aluminum (Al), % 0
91.3 to 94.6
Bismuth (Bi), % 0
0.2 to 0.6
Carbon (C), % 0 to 0.080
0
Copper (Cu), % 0
5.0 to 6.0
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.3
0 to 0.7
Lead (Pb), % 0
0.2 to 0.6
Nickel (Ni), % 0.4 to 0.6
0
Nitrogen (N), % 0 to 0.050
0
Oxygen (O), % 0 to 0.25
0
Ruthenium (Ru), % 0.040 to 0.060
0
Silicon (Si), % 0
0 to 0.4
Titanium (Ti), % 98.2 to 99.56
0
Zinc (Zn), % 0
0 to 0.3
Residuals, % 0
0 to 0.15