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Grade 24 Titanium vs. 4045 Aluminum

Grade 24 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 (3, in this case) are not shown.

For each property being compared, the top bar is grade 24 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, % 11
2.3
Fatigue Strength, MPa 550
45
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 40
27
Shear Strength, MPa 610
69
Tensile Strength: Ultimate (UTS), MPa 1010
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

Density, g/cm3 4.5
2.6
Embodied Carbon, kg CO2/kg material 43
7.8
Embodied Energy, MJ/kg 710
150
Embodied Water, L/kg 310
1070

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
2.4
Resilience: Unit (Modulus of Resilience), kJ/m3 4160
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 72
5.7

Alloy Composition

Aluminum (Al), % 5.5 to 6.8
87.4 to 91
Carbon (C), % 0 to 0.080
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
Nitrogen (N), % 0 to 0.050
0
Oxygen (O), % 0 to 0.2
0
Palladium (Pd), % 0.040 to 0.080
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 to 0.4
0 to 0.15