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Grade 25 Titanium vs. 2124 Aluminum

Grade 25 titanium belongs to the titanium alloys classification, while 2124 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 25 titanium and the bottom bar is 2124 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
71
Elongation at Break, % 11
5.7
Fatigue Strength, MPa 550
130
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 40
27
Shear Strength, MPa 600
280
Tensile Strength: Ultimate (UTS), MPa 1000
490
Tensile Strength: Yield (Proof), MPa 940
430

Thermal Properties

Latent Heat of Fusion, J/g 410
390
Maximum Temperature: Mechanical, °C 340
190
Melting Completion (Liquidus), °C 1610
640
Melting Onset (Solidus), °C 1560
500
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
38
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
8.2
Embodied Energy, MJ/kg 700
150
Embodied Water, L/kg 320
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
27
Resilience: Unit (Modulus of Resilience), kJ/m3 4220
1290
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
46
Strength to Weight: Axial, points 62
45
Strength to Weight: Bending, points 50
46
Thermal Diffusivity, mm2/s 2.8
58
Thermal Shock Resistance, points 71
21

Alloy Composition

Aluminum (Al), % 5.5 to 6.8
91.3 to 94.7
Carbon (C), % 0 to 0.080
0
Chromium (Cr), % 0
0 to 0.1
Copper (Cu), % 0
3.8 to 4.9
Hydrogen (H), % 0 to 0.013
0
Iron (Fe), % 0 to 0.4
0 to 0.3
Magnesium (Mg), % 0
1.2 to 1.8
Manganese (Mn), % 0
0.3 to 0.9
Nickel (Ni), % 0.3 to 0.8
0
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 0.2
Titanium (Ti), % 86.7 to 90.6
0 to 0.15
Vanadium (V), % 3.5 to 4.5
0
Zinc (Zn), % 0
0 to 0.25
Residuals, % 0
0 to 0.15