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Grade 9 Titanium vs. 5056 Aluminum

Grade 9 titanium belongs to the titanium alloys classification, while 5056 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 5056 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
67
Elongation at Break, % 11 to 17
4.9 to 31
Fatigue Strength, MPa 330 to 480
140 to 200
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 40
25
Shear Strength, MPa 430 to 580
170 to 240
Tensile Strength: Ultimate (UTS), MPa 700 to 960
290 to 460
Tensile Strength: Yield (Proof), MPa 540 to 830
150 to 410

Thermal Properties

Latent Heat of Fusion, J/g 410
400
Maximum Temperature: Mechanical, °C 330
190
Melting Completion (Liquidus), °C 1640
640
Melting Onset (Solidus), °C 1590
570
Specific Heat Capacity, J/kg-K 550
910
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
29
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
99

Otherwise Unclassified Properties

Base Metal Price, % relative 37
9.5
Density, g/cm3 4.5
2.7
Embodied Carbon, kg CO2/kg material 36
9.0
Embodied Energy, MJ/kg 580
150
Embodied Water, L/kg 150
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 89 to 110
12 to 140
Resilience: Unit (Modulus of Resilience), kJ/m3 1380 to 3220
170 to 1220
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
51
Strength to Weight: Axial, points 43 to 60
30 to 48
Strength to Weight: Bending, points 39 to 48
36 to 50
Thermal Diffusivity, mm2/s 3.3
53
Thermal Shock Resistance, points 52 to 71
13 to 20

Alloy Composition

Aluminum (Al), % 2.5 to 3.5
93 to 95.4
Carbon (C), % 0 to 0.080
0
Chromium (Cr), % 0
0.050 to 0.2
Copper (Cu), % 0
0 to 0.1
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.25
0 to 0.4
Magnesium (Mg), % 0
4.5 to 5.6
Manganese (Mn), % 0
0.050 to 0.2
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.15
0
Silicon (Si), % 0
0 to 0.3
Titanium (Ti), % 92.6 to 95.5
0
Vanadium (V), % 2.0 to 3.0
0
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.15

Comparable Variants