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8090 Aluminum vs. Grade 20 Titanium

8090 aluminum belongs to the aluminum alloys classification, while grade 20 titanium belongs to the titanium alloys. There are 24 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is 8090 aluminum and the bottom bar is grade 20 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 67
120
Elongation at Break, % 3.5 to 13
5.7 to 17
Fatigue Strength, MPa 91 to 140
550 to 630
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 25
47
Tensile Strength: Ultimate (UTS), MPa 340 to 490
900 to 1270
Tensile Strength: Yield (Proof), MPa 210 to 420
850 to 1190

Thermal Properties

Latent Heat of Fusion, J/g 400
400
Maximum Temperature: Mechanical, °C 190
370
Melting Completion (Liquidus), °C 660
1660
Melting Onset (Solidus), °C 600
1600
Specific Heat Capacity, J/kg-K 960
520
Thermal Expansion, µm/m-K 24
9.6

Otherwise Unclassified Properties

Density, g/cm3 2.7
5.0
Embodied Carbon, kg CO2/kg material 8.6
52
Embodied Energy, MJ/kg 170
860
Embodied Water, L/kg 1160
350

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 16 to 41
71 to 150
Resilience: Unit (Modulus of Resilience), kJ/m3 340 to 1330
2940 to 5760
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
33
Strength to Weight: Axial, points 34 to 49
50 to 70
Strength to Weight: Bending, points 39 to 50
41 to 52
Thermal Shock Resistance, points 15 to 22
55 to 77

Alloy Composition

Aluminum (Al), % 93 to 98.4
3.0 to 4.0
Carbon (C), % 0
0 to 0.050
Chromium (Cr), % 0 to 0.1
5.5 to 6.5
Copper (Cu), % 1.0 to 1.6
0
Hydrogen (H), % 0
0 to 0.020
Iron (Fe), % 0 to 0.3
0 to 0.3
Lithium (Li), % 2.2 to 2.7
0
Magnesium (Mg), % 0.6 to 1.3
0
Manganese (Mn), % 0 to 0.1
0
Molybdenum (Mo), % 0
3.5 to 4.5
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.12
Palladium (Pd), % 0
0.040 to 0.080
Silicon (Si), % 0 to 0.2
0
Titanium (Ti), % 0 to 0.1
71 to 77
Vanadium (V), % 0
7.5 to 8.5
Zinc (Zn), % 0 to 0.25
0
Zirconium (Zr), % 0.040 to 0.16
3.5 to 4.5
Residuals, % 0
0 to 0.4

Comparable Variants