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Grade 33 Titanium vs. 2017 Aluminum

Grade 33 titanium belongs to the titanium alloys classification, while 2017 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 33 titanium and the bottom bar is 2017 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
71
Elongation at Break, % 23
12 to 18
Fatigue Strength, MPa 250
90 to 130
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 41
27
Shear Strength, MPa 240
130 to 260
Tensile Strength: Ultimate (UTS), MPa 390
190 to 430
Tensile Strength: Yield (Proof), MPa 350
76 to 260

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
510
Specific Heat Capacity, J/kg-K 540
880
Thermal Conductivity, W/m-K 21
150
Thermal Expansion, µm/m-K 8.7
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.4
38
Electrical Conductivity: Equal Weight (Specific), % IACS 6.9
110

Otherwise Unclassified Properties

Base Metal Price, % relative 55
10
Density, g/cm3 4.5
3.0
Embodied Carbon, kg CO2/kg material 33
8.0
Embodied Energy, MJ/kg 530
150
Embodied Water, L/kg 200
1140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 86
24 to 66
Resilience: Unit (Modulus of Resilience), kJ/m3 590
41 to 470
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
46
Strength to Weight: Axial, points 24
17 to 40
Strength to Weight: Bending, points 26
24 to 42
Thermal Diffusivity, mm2/s 8.7
56
Thermal Shock Resistance, points 30
7.9 to 18

Alloy Composition

Aluminum (Al), % 0
91.6 to 95.5
Carbon (C), % 0 to 0.080
0
Chromium (Cr), % 0.1 to 0.2
0 to 0.1
Copper (Cu), % 0
3.5 to 4.5
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.3
0 to 0.7
Magnesium (Mg), % 0
0.4 to 0.8
Manganese (Mn), % 0
0.4 to 1.0
Nickel (Ni), % 0.35 to 0.55
0
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.25
0
Palladium (Pd), % 0.010 to 0.020
0
Ruthenium (Ru), % 0.020 to 0.040
0
Silicon (Si), % 0
0.2 to 0.8
Titanium (Ti), % 98.1 to 99.52
0 to 0.15
Zinc (Zn), % 0
0 to 0.25
Residuals, % 0
0 to 0.15