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Grade 24 Titanium vs. 2618A Aluminum

Grade 24 titanium belongs to the titanium alloys classification, while 2618A aluminum belongs to the aluminum alloys. There are 29 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 24 titanium and the bottom bar is 2618A aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
72
Elongation at Break, % 11
4.5
Fatigue Strength, MPa 550
120
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 40
27
Shear Strength, MPa 610
260
Tensile Strength: Ultimate (UTS), MPa 1010
440
Tensile Strength: Yield (Proof), MPa 940
410

Thermal Properties

Latent Heat of Fusion, J/g 410
390
Maximum Temperature: Mechanical, °C 340
230
Melting Completion (Liquidus), °C 1610
670
Melting Onset (Solidus), °C 1560
560
Specific Heat Capacity, J/kg-K 560
880
Thermal Conductivity, W/m-K 7.1
150
Thermal Expansion, µm/m-K 9.6
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.0
37
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
110

Otherwise Unclassified Properties

Density, g/cm3 4.5
3.0
Embodied Carbon, kg CO2/kg material 43
8.4
Embodied Energy, MJ/kg 710
150
Embodied Water, L/kg 310
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
19
Resilience: Unit (Modulus of Resilience), kJ/m3 4160
1180
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
47
Strength to Weight: Axial, points 63
41
Strength to Weight: Bending, points 50
44
Thermal Diffusivity, mm2/s 2.9
59
Thermal Shock Resistance, points 72
19

Alloy Composition

Aluminum (Al), % 5.5 to 6.8
91.5 to 95.2
Carbon (C), % 0 to 0.080
0
Copper (Cu), % 0
1.8 to 2.7
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.4
0.9 to 1.4
Magnesium (Mg), % 0
1.2 to 1.8
Manganese (Mn), % 0
0 to 0.25
Nickel (Ni), % 0
0.8 to 1.4
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
0.15 to 0.25
Titanium (Ti), % 87.5 to 91
0 to 0.2
Vanadium (V), % 3.5 to 4.5
0
Zinc (Zn), % 0
0 to 0.15
Zirconium (Zr), % 0
0 to 0.25
Residuals, % 0 to 0.4
0 to 0.15