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Grade C-5 Titanium vs. 851.0 Aluminum

Grade C-5 titanium belongs to the titanium alloys classification, while 851.0 aluminum belongs to the aluminum alloys. There are 25 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is grade C-5 titanium and the bottom bar is 851.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
69
Elongation at Break, % 6.7
3.9 to 9.1
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 40
26
Tensile Strength: Ultimate (UTS), MPa 1000
130 to 140

Thermal Properties

Latent Heat of Fusion, J/g 410
410
Maximum Temperature: Mechanical, °C 340
180
Melting Completion (Liquidus), °C 1610
630
Melting Onset (Solidus), °C 1560
360
Specific Heat Capacity, J/kg-K 560
850
Thermal Conductivity, W/m-K 7.1
180
Thermal Expansion, µm/m-K 9.6
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.0
46
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
140

Otherwise Unclassified Properties

Base Metal Price, % relative 36
14
Density, g/cm3 4.4
3.1
Embodied Carbon, kg CO2/kg material 38
8.4
Embodied Energy, MJ/kg 610
160
Embodied Water, L/kg 200
1140

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
45
Strength to Weight: Axial, points 63
12 to 13
Strength to Weight: Bending, points 50
19 to 20
Thermal Diffusivity, mm2/s 2.9
69
Thermal Shock Resistance, points 71
6.1 to 6.3

Alloy Composition

Aluminum (Al), % 5.5 to 6.8
86.6 to 91.5
Carbon (C), % 0 to 0.1
0
Copper (Cu), % 0
0.7 to 1.3
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.4
0 to 0.7
Magnesium (Mg), % 0
0 to 0.1
Manganese (Mn), % 0
0 to 0.1
Nickel (Ni), % 0 to 0.050
0.3 to 0.7
Oxygen (O), % 0 to 0.25
0
Silicon (Si), % 0
2.0 to 3.0
Tin (Sn), % 0
5.5 to 7.0
Titanium (Ti), % 87.5 to 91
0 to 0.2
Vanadium (V), % 3.5 to 4.5
0
Residuals, % 0
0 to 0.3