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Grade 9 Titanium vs. 5657 Aluminum

Grade 9 titanium belongs to the titanium alloys classification, while 5657 aluminum belongs to the aluminum alloys. There are 30 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is grade 9 titanium and the bottom bar is 5657 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
68
Elongation at Break, % 11 to 17
6.6 to 15
Fatigue Strength, MPa 330 to 480
74 to 88
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 40
26
Shear Strength, MPa 430 to 580
92 to 110
Tensile Strength: Ultimate (UTS), MPa 700 to 960
150 to 200
Tensile Strength: Yield (Proof), MPa 540 to 830
140 to 170

Thermal Properties

Latent Heat of Fusion, J/g 410
400
Maximum Temperature: Mechanical, °C 330
180
Melting Completion (Liquidus), °C 1640
660
Melting Onset (Solidus), °C 1590
640
Specific Heat Capacity, J/kg-K 550
900
Thermal Conductivity, W/m-K 8.1
210
Thermal Expansion, µm/m-K 9.1
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.4
54
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
180

Otherwise Unclassified Properties

Base Metal Price, % relative 37
9.5
Density, g/cm3 4.5
2.7
Embodied Carbon, kg CO2/kg material 36
8.4
Embodied Energy, MJ/kg 580
160
Embodied Water, L/kg 150
1200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 89 to 110
9.7 to 27
Resilience: Unit (Modulus of Resilience), kJ/m3 1380 to 3220
140 to 200
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
50
Strength to Weight: Axial, points 43 to 60
15 to 20
Strength to Weight: Bending, points 39 to 48
23 to 28
Thermal Diffusivity, mm2/s 3.3
84
Thermal Shock Resistance, points 52 to 71
6.7 to 8.6

Alloy Composition

Aluminum (Al), % 2.5 to 3.5
98.5 to 99.4
Carbon (C), % 0 to 0.080
0
Copper (Cu), % 0
0 to 0.1
Gallium (Ga), % 0
0 to 0.030
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.25
0 to 0.1
Magnesium (Mg), % 0
0.6 to 1.0
Manganese (Mn), % 0
0 to 0.030
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.15
0
Silicon (Si), % 0
0 to 0.080
Titanium (Ti), % 92.6 to 95.5
0
Vanadium (V), % 2.0 to 3.0
0 to 0.050
Zinc (Zn), % 0
0 to 0.050
Residuals, % 0
0 to 0.050