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Grade 20 Titanium vs. 5056 Aluminum

Grade 20 titanium belongs to the titanium alloys classification, while 5056 aluminum belongs to the aluminum alloys. There are 25 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is grade 20 titanium and the bottom bar is 5056 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
67
Elongation at Break, % 5.7 to 17
4.9 to 31
Fatigue Strength, MPa 550 to 630
140 to 200
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 47
25
Shear Strength, MPa 560 to 740
170 to 240
Tensile Strength: Ultimate (UTS), MPa 900 to 1270
290 to 460
Tensile Strength: Yield (Proof), MPa 850 to 1190
150 to 410

Thermal Properties

Latent Heat of Fusion, J/g 400
400
Maximum Temperature: Mechanical, °C 370
190
Melting Completion (Liquidus), °C 1660
640
Melting Onset (Solidus), °C 1600
570
Specific Heat Capacity, J/kg-K 520
910
Thermal Expansion, µm/m-K 9.6
24

Otherwise Unclassified Properties

Density, g/cm3 5.0
2.7
Embodied Carbon, kg CO2/kg material 52
9.0
Embodied Energy, MJ/kg 860
150
Embodied Water, L/kg 350
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 71 to 150
12 to 140
Resilience: Unit (Modulus of Resilience), kJ/m3 2940 to 5760
170 to 1220
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 33
51
Strength to Weight: Axial, points 50 to 70
30 to 48
Strength to Weight: Bending, points 41 to 52
36 to 50
Thermal Shock Resistance, points 55 to 77
13 to 20

Alloy Composition

Aluminum (Al), % 3.0 to 4.0
93 to 95.4
Carbon (C), % 0 to 0.050
0
Chromium (Cr), % 5.5 to 6.5
0.050 to 0.2
Copper (Cu), % 0
0 to 0.1
Hydrogen (H), % 0 to 0.020
0
Iron (Fe), % 0 to 0.3
0 to 0.4
Magnesium (Mg), % 0
4.5 to 5.6
Manganese (Mn), % 0
0.050 to 0.2
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 0.3
Titanium (Ti), % 71 to 77
0
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 0.15

Comparable Variants