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7020 Aluminum vs. Titanium 6-6-2

7020 aluminum belongs to the aluminum alloys classification, while titanium 6-6-2 belongs to the titanium alloys. There are 29 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is 7020 aluminum and the bottom bar is titanium 6-6-2.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
120
Elongation at Break, % 8.4 to 14
6.7 to 9.0
Fatigue Strength, MPa 110 to 130
590 to 670
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 26
44
Shear Strength, MPa 110 to 230
670 to 800
Tensile Strength: Ultimate (UTS), MPa 190 to 390
1140 to 1370
Tensile Strength: Yield (Proof), MPa 120 to 310
1040 to 1230

Thermal Properties

Latent Heat of Fusion, J/g 380
400
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
540
Thermal Conductivity, W/m-K 150
5.5
Thermal Expansion, µm/m-K 23
9.4

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 39
1.1
Electrical Conductivity: Equal Weight (Specific), % IACS 120
2.1

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
40
Density, g/cm3 2.9
4.8
Embodied Carbon, kg CO2/kg material 8.3
29
Embodied Energy, MJ/kg 150
470
Embodied Water, L/kg 1150
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 23 to 46
89 to 99
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 47
34
Strength to Weight: Axial, points 18 to 37
66 to 79
Strength to Weight: Bending, points 25 to 41
50 to 57
Thermal Diffusivity, mm2/s 59
2.1
Thermal Shock Resistance, points 8.3 to 17
75 to 90

Alloy Composition

Aluminum (Al), % 91.2 to 94.8
5.0 to 6.0
Carbon (C), % 0
0 to 0.050
Chromium (Cr), % 0.1 to 0.35
0
Copper (Cu), % 0 to 0.2
0.35 to 1.0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 0 to 0.4
0.35 to 1.0
Magnesium (Mg), % 1.0 to 1.4
0
Manganese (Mn), % 0.050 to 0.5
0
Molybdenum (Mo), % 0
5.0 to 6.0
Nitrogen (N), % 0
0 to 0.040
Oxygen (O), % 0
0 to 0.2
Silicon (Si), % 0 to 0.35
0
Tin (Sn), % 0
1.5 to 2.5
Titanium (Ti), % 0 to 0.25
82.8 to 87.8
Zinc (Zn), % 4.0 to 5.0
0
Zirconium (Zr), % 0.080 to 0.25
0
Residuals, % 0
0 to 0.4

Comparable Variants