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Grade C-5 Titanium vs. 4045 Aluminum

Grade C-5 titanium belongs to the titanium alloys classification, while 4045 aluminum belongs to the aluminum alloys. There are 29 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is grade C-5 titanium and the bottom bar is 4045 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
71
Elongation at Break, % 6.7
2.3
Fatigue Strength, MPa 510
45
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 40
27
Tensile Strength: Ultimate (UTS), MPa 1000
120
Tensile Strength: Yield (Proof), MPa 940
64

Thermal Properties

Latent Heat of Fusion, J/g 410
540
Maximum Temperature: Mechanical, °C 340
160
Melting Completion (Liquidus), °C 1610
600
Melting Onset (Solidus), °C 1560
580
Specific Heat Capacity, J/kg-K 560
900
Thermal Conductivity, W/m-K 7.1
170
Thermal Expansion, µm/m-K 9.6
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.0
45
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
160

Otherwise Unclassified Properties

Base Metal Price, % relative 36
9.5
Density, g/cm3 4.4
2.6
Embodied Carbon, kg CO2/kg material 38
7.8
Embodied Energy, MJ/kg 610
150
Embodied Water, L/kg 200
1070

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 66
2.4
Resilience: Unit (Modulus of Resilience), kJ/m3 4200
29
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 35
54
Strength to Weight: Axial, points 63
13
Strength to Weight: Bending, points 50
21
Thermal Diffusivity, mm2/s 2.9
74
Thermal Shock Resistance, points 71
5.7

Alloy Composition

Aluminum (Al), % 5.5 to 6.8
87.4 to 91
Carbon (C), % 0 to 0.1
0
Copper (Cu), % 0
0 to 0.3
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.4
0 to 0.8
Magnesium (Mg), % 0
0 to 0.050
Manganese (Mn), % 0
0 to 0.050
Nickel (Ni), % 0 to 0.050
0
Oxygen (O), % 0 to 0.25
0
Silicon (Si), % 0
9.0 to 11
Titanium (Ti), % 87.5 to 91
0 to 0.2
Vanadium (V), % 3.5 to 4.5
0
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.15