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Grade C-5 Titanium vs. 2117 Aluminum

Grade C-5 titanium belongs to the titanium alloys classification, while 2117 aluminum belongs to the aluminum alloys. There are 30 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is grade C-5 titanium and the bottom bar is 2117 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 310
70
Elastic (Young's, Tensile) Modulus, GPa 110
71
Elongation at Break, % 6.7
26
Fatigue Strength, MPa 510
95
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 40
27
Tensile Strength: Ultimate (UTS), MPa 1000
300
Tensile Strength: Yield (Proof), MPa 940
170

Thermal Properties

Latent Heat of Fusion, J/g 410
400
Maximum Temperature: Mechanical, °C 340
220
Melting Completion (Liquidus), °C 1610
650
Melting Onset (Solidus), °C 1560
550
Specific Heat Capacity, J/kg-K 560
880
Thermal Conductivity, W/m-K 7.1
150
Thermal Expansion, µm/m-K 9.6
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.0
40
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
120

Otherwise Unclassified Properties

Base Metal Price, % relative 36
10
Density, g/cm3 4.4
3.0
Embodied Carbon, kg CO2/kg material 38
8.2
Embodied Energy, MJ/kg 610
150
Embodied Water, L/kg 200
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 66
64
Resilience: Unit (Modulus of Resilience), kJ/m3 4200
190
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
47
Strength to Weight: Axial, points 63
28
Strength to Weight: Bending, points 50
33
Thermal Diffusivity, mm2/s 2.9
59
Thermal Shock Resistance, points 71
12

Alloy Composition

Aluminum (Al), % 5.5 to 6.8
91 to 97.6
Carbon (C), % 0 to 0.1
0
Chromium (Cr), % 0
0 to 0.1
Copper (Cu), % 0
2.2 to 4.5
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.4
0 to 0.7
Magnesium (Mg), % 0
0.2 to 1.0
Manganese (Mn), % 0
0.4 to 1.0
Nickel (Ni), % 0 to 0.050
0
Oxygen (O), % 0 to 0.25
0
Silicon (Si), % 0
0.2 to 0.8
Titanium (Ti), % 87.5 to 91
0 to 0.25
Vanadium (V), % 3.5 to 4.5
0
Zinc (Zn), % 0
0 to 0.25
Zirconium (Zr), % 0
0 to 0.25
Residuals, % 0
0 to 0.15