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Grade 24 Titanium vs. EN AC-21100 Aluminum

Grade 24 titanium belongs to the titanium alloys classification, while EN AC-21100 aluminum belongs to the aluminum alloys. There are 28 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 24 titanium and the bottom bar is EN AC-21100 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
71
Elongation at Break, % 11
6.2 to 7.3
Fatigue Strength, MPa 550
79 to 87
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 40
27
Tensile Strength: Ultimate (UTS), MPa 1010
340 to 350
Tensile Strength: Yield (Proof), MPa 940
210 to 240

Thermal Properties

Latent Heat of Fusion, J/g 410
390
Maximum Temperature: Mechanical, °C 340
170
Melting Completion (Liquidus), °C 1610
670
Melting Onset (Solidus), °C 1560
550
Specific Heat Capacity, J/kg-K 560
880
Thermal Conductivity, W/m-K 7.1
130
Thermal Expansion, µm/m-K 9.6
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.0
34
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
100

Otherwise Unclassified Properties

Density, g/cm3 4.5
3.0
Embodied Carbon, kg CO2/kg material 43
8.0
Embodied Energy, MJ/kg 710
150
Embodied Water, L/kg 310
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
19 to 21
Resilience: Unit (Modulus of Resilience), kJ/m3 4160
300 to 400
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
46
Strength to Weight: Axial, points 63
31 to 33
Strength to Weight: Bending, points 50
36 to 37
Thermal Diffusivity, mm2/s 2.9
48
Thermal Shock Resistance, points 72
15

Alloy Composition

Aluminum (Al), % 5.5 to 6.8
93.4 to 95.7
Carbon (C), % 0 to 0.080
0
Copper (Cu), % 0
4.2 to 5.2
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.4
0 to 0.19
Manganese (Mn), % 0
0 to 0.55
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 to 0.18
Titanium (Ti), % 87.5 to 91
0.15 to 0.3
Vanadium (V), % 3.5 to 4.5
0
Zinc (Zn), % 0
0 to 0.070
Residuals, % 0 to 0.4
0 to 0.1