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Grade 9 Titanium vs. 5070 Aluminum

Grade 9 titanium belongs to the titanium alloys classification, while 5070 aluminum belongs to the aluminum alloys. There are 30 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is grade 9 titanium and the bottom bar is 5070 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
68
Elongation at Break, % 11 to 17
20
Fatigue Strength, MPa 330 to 480
150
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 40
26
Shear Strength, MPa 430 to 580
190
Tensile Strength: Ultimate (UTS), MPa 700 to 960
300
Tensile Strength: Yield (Proof), MPa 540 to 830
140

Thermal Properties

Latent Heat of Fusion, J/g 410
390
Maximum Temperature: Mechanical, °C 330
190
Melting Completion (Liquidus), °C 1640
640
Melting Onset (Solidus), °C 1590
550
Specific Heat Capacity, J/kg-K 550
900
Thermal Conductivity, W/m-K 8.1
130
Thermal Expansion, µm/m-K 9.1
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.4
31
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
100

Otherwise Unclassified Properties

Base Metal Price, % relative 37
9.5
Density, g/cm3 4.5
2.7
Embodied Carbon, kg CO2/kg material 36
8.8
Embodied Energy, MJ/kg 580
150
Embodied Water, L/kg 150
1170

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 89 to 110
51
Resilience: Unit (Modulus of Resilience), kJ/m3 1380 to 3220
150
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
50
Strength to Weight: Axial, points 43 to 60
31
Strength to Weight: Bending, points 39 to 48
37
Thermal Diffusivity, mm2/s 3.3
53
Thermal Shock Resistance, points 52 to 71
14

Alloy Composition

Aluminum (Al), % 2.5 to 3.5
92.4 to 95.7
Carbon (C), % 0 to 0.080
0
Chromium (Cr), % 0
0 to 0.3
Copper (Cu), % 0
0 to 0.25
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.25
0 to 0.4
Magnesium (Mg), % 0
3.5 to 4.5
Manganese (Mn), % 0
0.4 to 0.8
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.15
0
Silicon (Si), % 0
0 to 0.25
Titanium (Ti), % 92.6 to 95.5
0 to 0.15
Vanadium (V), % 2.0 to 3.0
0
Zinc (Zn), % 0
0.4 to 0.8
Residuals, % 0
0 to 0.15