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Grade 20 Titanium vs. EN AC-21100 Aluminum

Grade 20 titanium belongs to the titanium alloys classification, while EN AC-21100 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-21100 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
71
Elongation at Break, % 5.7 to 17
6.2 to 7.3
Fatigue Strength, MPa 550 to 630
79 to 87
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 47
27
Tensile Strength: Ultimate (UTS), MPa 900 to 1270
340 to 350
Tensile Strength: Yield (Proof), MPa 850 to 1190
210 to 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
19 to 21
Resilience: Unit (Modulus of Resilience), kJ/m3 2940 to 5760
300 to 400
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 33
46
Strength to Weight: Axial, points 50 to 70
31 to 33
Strength to Weight: Bending, points 41 to 52
36 to 37
Thermal Shock Resistance, points 55 to 77
15

Alloy Composition

Aluminum (Al), % 3.0 to 4.0
93.4 to 95.7
Carbon (C), % 0 to 0.050
0
Chromium (Cr), % 5.5 to 6.5
0
Copper (Cu), % 0
4.2 to 5.2
Hydrogen (H), % 0 to 0.020
0
Iron (Fe), % 0 to 0.3
0 to 0.19
Manganese (Mn), % 0
0 to 0.55
Molybdenum (Mo), % 3.5 to 4.5
0
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 0.18
Titanium (Ti), % 71 to 77
0.15 to 0.3
Vanadium (V), % 7.5 to 8.5
0
Zinc (Zn), % 0
0 to 0.070
Zirconium (Zr), % 3.5 to 4.5
0
Residuals, % 0
0 to 0.1

Comparable Variants