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5021 Aluminum vs. Grade 37 Titanium

5021 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 5021 aluminum and the bottom bar is grade 37 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
110
Elongation at Break, % 1.1 to 3.4
22
Fatigue Strength, MPa 85 to 110
170
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 26
40
Shear Strength, MPa 170
240
Tensile Strength: Ultimate (UTS), MPa 300 to 310
390
Tensile Strength: Yield (Proof), MPa 240 to 270
250

Thermal Properties

Latent Heat of Fusion, J/g 400
420
Maximum Temperature: Mechanical, °C 180
310
Melting Completion (Liquidus), °C 640
1650
Melting Onset (Solidus), °C 590
1600
Specific Heat Capacity, J/kg-K 900
550
Thermal Conductivity, W/m-K 140
21
Thermal Expansion, µm/m-K 23
8.9

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 35
3.4
Electrical Conductivity: Equal Weight (Specific), % IACS 120
6.8

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
36
Density, g/cm3 2.7
4.5
Embodied Carbon, kg CO2/kg material 8.6
31
Embodied Energy, MJ/kg 150
500
Embodied Water, L/kg 1180
120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.1 to 10
76
Resilience: Unit (Modulus of Resilience), kJ/m3 440 to 550
280
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
35
Strength to Weight: Axial, points 30 to 32
24
Strength to Weight: Bending, points 37
26
Thermal Diffusivity, mm2/s 57
8.4
Thermal Shock Resistance, points 13 to 14
29

Alloy Composition

Aluminum (Al), % 95.2 to 97.7
1.0 to 2.0
Carbon (C), % 0
0 to 0.080
Chromium (Cr), % 0 to 0.15
0
Copper (Cu), % 0 to 0.15
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 0 to 0.5
0 to 0.3
Magnesium (Mg), % 2.2 to 2.8
0
Manganese (Mn), % 0.1 to 0.5
0
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.25
Silicon (Si), % 0 to 0.4
0
Titanium (Ti), % 0
96.9 to 99
Zinc (Zn), % 0 to 0.15
0
Residuals, % 0
0 to 0.4