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7020 Aluminum vs. Grade 32 Titanium

7020 aluminum belongs to the aluminum alloys classification, while grade 32 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 7020 aluminum and the bottom bar is grade 32 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
110
Elongation at Break, % 8.4 to 14
11
Fatigue Strength, MPa 110 to 130
390
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 26
40
Shear Strength, MPa 110 to 230
460
Tensile Strength: Ultimate (UTS), MPa 190 to 390
770
Tensile Strength: Yield (Proof), MPa 120 to 310
670

Thermal Properties

Latent Heat of Fusion, J/g 380
410
Maximum Temperature: Mechanical, °C 210
310
Melting Completion (Liquidus), °C 650
1610
Melting Onset (Solidus), °C 610
1560
Specific Heat Capacity, J/kg-K 880
550
Thermal Conductivity, W/m-K 150
7.5
Thermal Expansion, µm/m-K 23
8.2

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 39
1.0
Electrical Conductivity: Equal Weight (Specific), % IACS 120
2.1

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
38
Density, g/cm3 2.9
4.5
Embodied Carbon, kg CO2/kg material 8.3
32
Embodied Energy, MJ/kg 150
530
Embodied Water, L/kg 1150
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 23 to 46
83
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 690
2100
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 47
35
Strength to Weight: Axial, points 18 to 37
47
Strength to Weight: Bending, points 25 to 41
41
Thermal Diffusivity, mm2/s 59
3.0
Thermal Shock Resistance, points 8.3 to 17
63

Alloy Composition

Aluminum (Al), % 91.2 to 94.8
4.5 to 5.5
Carbon (C), % 0
0 to 0.080
Chromium (Cr), % 0.1 to 0.35
0
Copper (Cu), % 0 to 0.2
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 0 to 0.4
0 to 0.25
Magnesium (Mg), % 1.0 to 1.4
0
Manganese (Mn), % 0.050 to 0.5
0
Molybdenum (Mo), % 0
0.6 to 1.2
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.11
Silicon (Si), % 0 to 0.35
0.060 to 0.14
Tin (Sn), % 0
0.6 to 1.4
Titanium (Ti), % 0 to 0.25
88.1 to 93
Vanadium (V), % 0
0.6 to 1.4
Zinc (Zn), % 4.0 to 5.0
0
Zirconium (Zr), % 0.080 to 0.25
0.6 to 1.4
Residuals, % 0
0 to 0.4