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2024 Aluminum vs. Grade 27 Titanium

2024 aluminum belongs to the aluminum alloys classification, while grade 27 titanium belongs to the titanium alloys. There are 30 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 2024 aluminum and the bottom bar is grade 27 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
110
Elongation at Break, % 4.0 to 16
27
Fatigue Strength, MPa 90 to 180
170
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 27
41
Shear Strength, MPa 130 to 320
180
Tensile Strength: Ultimate (UTS), MPa 200 to 540
270
Tensile Strength: Yield (Proof), MPa 100 to 490
230

Thermal Properties

Latent Heat of Fusion, J/g 390
420
Maximum Temperature: Mechanical, °C 200
320
Melting Completion (Liquidus), °C 640
1660
Melting Onset (Solidus), °C 500
1610
Specific Heat Capacity, J/kg-K 880
540
Thermal Conductivity, W/m-K 120
21
Thermal Expansion, µm/m-K 23
8.7

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 30
3.6
Electrical Conductivity: Equal Weight (Specific), % IACS 90
7.1

Otherwise Unclassified Properties

Base Metal Price, % relative 11
37
Density, g/cm3 3.0
4.5
Embodied Carbon, kg CO2/kg material 8.3
33
Embodied Energy, MJ/kg 150
530
Embodied Water, L/kg 1140
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 20 to 68
70
Resilience: Unit (Modulus of Resilience), kJ/m3 70 to 1680
240
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 46
35
Strength to Weight: Axial, points 18 to 50
17
Strength to Weight: Bending, points 25 to 49
21
Thermal Diffusivity, mm2/s 46
8.8
Thermal Shock Resistance, points 8.6 to 24
21

Alloy Composition

Aluminum (Al), % 90.7 to 94.7
0
Carbon (C), % 0
0 to 0.080
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 3.8 to 4.9
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 0 to 0.5
0 to 0.2
Magnesium (Mg), % 1.2 to 1.8
0
Manganese (Mn), % 0.3 to 0.9
0
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.18
Ruthenium (Ru), % 0
0.080 to 0.14
Silicon (Si), % 0 to 0.5
0
Titanium (Ti), % 0 to 0.15
99 to 99.92
Zinc (Zn), % 0 to 0.25
0
Zirconium (Zr), % 0 to 0.2
0
Residuals, % 0
0 to 0.4