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Grade C-5 Titanium vs. 6351 Aluminum

Grade C-5 titanium belongs to the titanium alloys classification, while 6351 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-5 titanium and the bottom bar is 6351 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
69
Elongation at Break, % 6.7
7.8 to 18
Fatigue Strength, MPa 510
79 to 130
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 40
26
Tensile Strength: Ultimate (UTS), MPa 1000
140 to 310
Tensile Strength: Yield (Proof), MPa 940
95 to 270

Thermal Properties

Latent Heat of Fusion, J/g 410
410
Maximum Temperature: Mechanical, °C 340
160
Melting Completion (Liquidus), °C 1610
650
Melting Onset (Solidus), °C 1560
570
Specific Heat Capacity, J/kg-K 560
900
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
150

Otherwise Unclassified Properties

Base Metal Price, % relative 36
9.5
Density, g/cm3 4.4
2.7
Embodied Carbon, kg CO2/kg material 38
8.3
Embodied Energy, MJ/kg 610
150
Embodied Water, L/kg 200
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 66
20 to 38
Resilience: Unit (Modulus of Resilience), kJ/m3 4200
65 to 540
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
50
Strength to Weight: Axial, points 63
14 to 32
Strength to Weight: Bending, points 50
22 to 38
Thermal Diffusivity, mm2/s 2.9
72
Thermal Shock Resistance, points 71
6.1 to 14

Alloy Composition

Aluminum (Al), % 5.5 to 6.8
96 to 98.5
Carbon (C), % 0 to 0.1
0
Copper (Cu), % 0
0 to 0.1
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.4
0 to 0.5
Magnesium (Mg), % 0
0.4 to 0.8
Manganese (Mn), % 0
0.4 to 0.8
Nickel (Ni), % 0 to 0.050
0
Oxygen (O), % 0 to 0.25
0
Silicon (Si), % 0
0.7 to 1.3
Titanium (Ti), % 87.5 to 91
0 to 0.2
Vanadium (V), % 3.5 to 4.5
0
Zinc (Zn), % 0
0 to 0.2
Residuals, % 0
0 to 0.15