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Grade 20 Titanium vs. EN AC-21000 Aluminum

Grade 20 titanium belongs to the titanium alloys classification, while EN AC-21000 aluminum belongs to the aluminum 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 grade 20 titanium and the bottom bar is EN AC-21000 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
71
Elongation at Break, % 5.7 to 17
6.7
Fatigue Strength, MPa 550 to 630
100
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 47
27
Tensile Strength: Ultimate (UTS), MPa 900 to 1270
340
Tensile Strength: Yield (Proof), MPa 850 to 1190
240

Thermal Properties

Latent Heat of Fusion, J/g 400
390
Maximum Temperature: Mechanical, °C 370
170
Melting Completion (Liquidus), °C 1660
670
Melting Onset (Solidus), °C 1600
550
Specific Heat Capacity, J/kg-K 520
880
Thermal Expansion, µm/m-K 9.6
23

Otherwise Unclassified Properties

Density, g/cm3 5.0
3.0
Embodied Carbon, kg CO2/kg material 52
8.0
Embodied Energy, MJ/kg 860
150
Embodied Water, L/kg 350
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 71 to 150
21
Resilience: Unit (Modulus of Resilience), kJ/m3 2940 to 5760
390
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 33
46
Strength to Weight: Axial, points 50 to 70
32
Strength to Weight: Bending, points 41 to 52
36
Thermal Shock Resistance, points 55 to 77
15

Alloy Composition

Aluminum (Al), % 3.0 to 4.0
93.4 to 95.5
Carbon (C), % 0 to 0.050
0
Chromium (Cr), % 5.5 to 6.5
0
Copper (Cu), % 0
4.2 to 5.0
Hydrogen (H), % 0 to 0.020
0
Iron (Fe), % 0 to 0.3
0 to 0.35
Lead (Pb), % 0
0 to 0.050
Magnesium (Mg), % 0
0.15 to 0.35
Manganese (Mn), % 0
0 to 0.1
Molybdenum (Mo), % 3.5 to 4.5
0
Nickel (Ni), % 0
0 to 0.050
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.12
0
Palladium (Pd), % 0.040 to 0.080
0
Silicon (Si), % 0
0 to 0.2
Tin (Sn), % 0
0 to 0.050
Titanium (Ti), % 71 to 77
0.15 to 0.3
Vanadium (V), % 7.5 to 8.5
0
Zinc (Zn), % 0
0 to 0.1
Zirconium (Zr), % 3.5 to 4.5
0
Residuals, % 0
0 to 0.1