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2124 Aluminum vs. Grade 37 Titanium

2124 aluminum belongs to the aluminum alloys classification, while grade 37 titanium belongs to the titanium alloys. There are 30 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is 2124 aluminum and the bottom bar is grade 37 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
110
Elongation at Break, % 5.7
22
Fatigue Strength, MPa 130
170
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 27
40
Shear Strength, MPa 280
240
Tensile Strength: Ultimate (UTS), MPa 490
390
Tensile Strength: Yield (Proof), MPa 430
250

Thermal Properties

Latent Heat of Fusion, J/g 390
420
Maximum Temperature: Mechanical, °C 190
310
Melting Completion (Liquidus), °C 640
1650
Melting Onset (Solidus), °C 500
1600
Specific Heat Capacity, J/kg-K 880
550
Thermal Conductivity, W/m-K 150
21
Thermal Expansion, µm/m-K 23
8.9

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 38
3.4
Electrical Conductivity: Equal Weight (Specific), % IACS 110
6.8

Otherwise Unclassified Properties

Base Metal Price, % relative 10
36
Density, g/cm3 3.0
4.5
Embodied Carbon, kg CO2/kg material 8.2
31
Embodied Energy, MJ/kg 150
500
Embodied Water, L/kg 1150
120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 27
76
Resilience: Unit (Modulus of Resilience), kJ/m3 1290
280
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 46
35
Strength to Weight: Axial, points 45
24
Strength to Weight: Bending, points 46
26
Thermal Diffusivity, mm2/s 58
8.4
Thermal Shock Resistance, points 21
29

Alloy Composition

Aluminum (Al), % 91.3 to 94.7
1.0 to 2.0
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 0.3
0 to 0.3
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 0.25
Silicon (Si), % 0 to 0.2
0
Titanium (Ti), % 0 to 0.15
96.9 to 99
Zinc (Zn), % 0 to 0.25
0
Residuals, % 0
0 to 0.4