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7129 Aluminum vs. Titanium 6-5-0.5

7129 Aluminum belongs to the aluminum alloys classification, while titanium 6-5-0.5 belongs to the titanium 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 7129 Aluminum and the bottom bar is titanium 6-5-0.5.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
100
Elongation at Break, % 9.0 to 9.1
6.7
Fatigue Strength, MPa 150 to 190
530
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 26
40
Shear Strength, MPa 250 to 260
630
Tensile Strength: Ultimate (UTS), MPa 430
1080
Tensile Strength: Yield (Proof), MPa 380 to 390
990

Thermal Properties

Latent Heat of Fusion, J/g 380
410
Maximum Temperature: Mechanical, °C 180
300
Melting Completion (Liquidus), °C 630
1610
Melting Onset (Solidus), °C 510
1560
Specific Heat Capacity, J/kg-K 880
550
Thermal Conductivity, W/m-K 150
4.2
Thermal Expansion, µm/m-K 24
9.4

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
1.0
Electrical Conductivity: Equal Weight (Specific), % IACS 120
2.1

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
41
Density, g/cm3 2.9
4.5
Embodied Carbon, kg CO2/kg material 8.3
33
Embodied Energy, MJ/kg 150
540
Embodied Water, L/kg 1150
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 37 to 38
71
Resilience: Unit (Modulus of Resilience), kJ/m3 1050 to 1090
4630
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 47
35
Strength to Weight: Axial, points 41
67
Strength to Weight: Bending, points 43 to 44
52
Thermal Diffusivity, mm2/s 58
1.7
Thermal Shock Resistance, points 19
79

Alloy Composition


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Aluminum (Al), % 91 to 94
5.7 to 6.3
Carbon (C), % 0
0 to 0.080
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 0.5 to 0.9
0
Gallium (Ga), % 0 to 0.030
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 0 to 0.3
0 to 0.2
Magnesium (Mg), % 1.3 to 2.0
0
Manganese (Mn), % 0 to 0.1
0
Molybdenum (Mo), % 0
0.25 to 0.75
Nitrogen (N), % 0
0 to 0.050
Oxygen (O), % 0
0 to 0.19
Silicon (Si), % 0 to 0.15
0 to 0.4
Titanium (Ti), % 0 to 0.050
85.6 to 90.1
Vanadium (V), % 0 to 0.050
0
Zinc (Zn), % 4.2 to 5.2
0
Zirconium (Zr), % 0
4.0 to 6.0
Residuals, % 0 to 0.15
0 to 0.4