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Grade 20 Titanium vs. 7003 Aluminum

Grade 20 titanium belongs to the titanium alloys classification, while 7003 aluminum belongs to the aluminum alloys. There are 25 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is grade 20 titanium and the bottom bar is 7003 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
70
Elongation at Break, % 5.7 to 17
11
Fatigue Strength, MPa 550 to 630
130 to 150
Poisson's Ratio 0.32
0.32
Shear Modulus, GPa 47
26
Shear Strength, MPa 560 to 740
210 to 230
Tensile Strength: Ultimate (UTS), MPa 900 to 1270
350 to 390
Tensile Strength: Yield (Proof), MPa 850 to 1190
300 to 310

Thermal Properties

Latent Heat of Fusion, J/g 400
380
Maximum Temperature: Mechanical, °C 370
200
Melting Completion (Liquidus), °C 1660
630
Melting Onset (Solidus), °C 1600
510
Specific Heat Capacity, J/kg-K 520
870
Thermal Expansion, µm/m-K 9.6
24

Otherwise Unclassified Properties

Density, g/cm3 5.0
2.9
Embodied Carbon, kg CO2/kg material 52
8.1
Embodied Energy, MJ/kg 860
150
Embodied Water, L/kg 350
1140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 71 to 150
37 to 41
Resilience: Unit (Modulus of Resilience), kJ/m3 2940 to 5760
630 to 710
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 33
47
Strength to Weight: Axial, points 50 to 70
33 to 37
Strength to Weight: Bending, points 41 to 52
37 to 40
Thermal Shock Resistance, points 55 to 77
15 to 17

Alloy Composition

Aluminum (Al), % 3.0 to 4.0
90.6 to 94.5
Carbon (C), % 0 to 0.050
0
Chromium (Cr), % 5.5 to 6.5
0 to 0.2
Copper (Cu), % 0
0 to 0.2
Hydrogen (H), % 0 to 0.020
0
Iron (Fe), % 0 to 0.3
0 to 0.35
Magnesium (Mg), % 0
0.5 to 1.0
Manganese (Mn), % 0
0 to 0.3
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 to 0.2
Vanadium (V), % 7.5 to 8.5
0
Zinc (Zn), % 0
5.0 to 6.5
Zirconium (Zr), % 3.5 to 4.5
0.050 to 0.25
Residuals, % 0
0 to 0.15

Comparable Variants