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2124 Aluminum vs. Grade 36 Titanium

2124 aluminum belongs to the aluminum alloys classification, while grade 36 titanium belongs to the titanium alloys. There are 25 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is 2124 aluminum and the bottom bar is grade 36 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
110
Elongation at Break, % 5.7
11
Fatigue Strength, MPa 130
300
Poisson's Ratio 0.33
0.36
Shear Modulus, GPa 27
39
Shear Strength, MPa 280
320
Tensile Strength: Ultimate (UTS), MPa 490
530
Tensile Strength: Yield (Proof), MPa 430
520

Thermal Properties

Latent Heat of Fusion, J/g 390
370
Maximum Temperature: Mechanical, °C 190
320
Melting Completion (Liquidus), °C 640
2020
Melting Onset (Solidus), °C 500
1950
Specific Heat Capacity, J/kg-K 880
420
Thermal Expansion, µm/m-K 23
8.1

Otherwise Unclassified Properties

Density, g/cm3 3.0
6.3
Embodied Carbon, kg CO2/kg material 8.2
58
Embodied Energy, MJ/kg 150
920
Embodied Water, L/kg 1150
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 27
59
Resilience: Unit (Modulus of Resilience), kJ/m3 1290
1260
Stiffness to Weight: Axial, points 13
9.3
Stiffness to Weight: Bending, points 46
25
Strength to Weight: Axial, points 45
23
Strength to Weight: Bending, points 46
23
Thermal Shock Resistance, points 21
45

Alloy Composition

Aluminum (Al), % 91.3 to 94.7
0
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 3.8 to 4.9
0
Hydrogen (H), % 0
0 to 0.0035
Iron (Fe), % 0 to 0.3
0 to 0.030
Magnesium (Mg), % 1.2 to 1.8
0
Manganese (Mn), % 0.3 to 0.9
0
Niobium (Nb), % 0
42 to 47
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.16
Silicon (Si), % 0 to 0.2
0
Titanium (Ti), % 0 to 0.15
52.3 to 58
Zinc (Zn), % 0 to 0.25
0
Residuals, % 0
0 to 0.4