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7129 Aluminum vs. Grade 29 Titanium

7129 Aluminum belongs to the aluminum alloys classification, while grade 29 titanium 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 grade 29 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
110
Elongation at Break, % 9.0 to 9.1
6.8 to 11
Fatigue Strength, MPa 150 to 190
460 to 510
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 26
40
Shear Strength, MPa 250 to 260
550 to 560
Tensile Strength: Ultimate (UTS), MPa 430
930 to 940
Tensile Strength: Yield (Proof), MPa 380 to 390
850 to 870

Thermal Properties

Latent Heat of Fusion, J/g 380
410
Maximum Temperature: Mechanical, °C 180
340
Melting Completion (Liquidus), °C 630
1610
Melting Onset (Solidus), °C 510
1560
Specific Heat Capacity, J/kg-K 880
560
Thermal Conductivity, W/m-K 150
7.3
Thermal Expansion, µm/m-K 24
9.3

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
1.0
Electrical Conductivity: Equal Weight (Specific), % IACS 120
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
36
Density, g/cm3 2.9
4.5
Embodied Carbon, kg CO2/kg material 8.3
39
Embodied Energy, MJ/kg 150
640
Embodied Water, L/kg 1150
410

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 37 to 38
62 to 100
Resilience: Unit (Modulus of Resilience), kJ/m3 1050 to 1090
3420 to 3540
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 47
35
Strength to Weight: Axial, points 41
58 to 59
Strength to Weight: Bending, points 43 to 44
47 to 48
Thermal Diffusivity, mm2/s 58
2.9
Thermal Shock Resistance, points 19
68 to 69

Alloy Composition

Aluminum (Al), % 91 to 94
5.5 to 6.5
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 0.25
Magnesium (Mg), % 1.3 to 2.0
0
Manganese (Mn), % 0 to 0.1
0
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.13
Ruthenium (Ru), % 0
0.080 to 0.14
Silicon (Si), % 0 to 0.15
0
Titanium (Ti), % 0 to 0.050
88 to 90.9
Vanadium (V), % 0 to 0.050
3.5 to 4.5
Zinc (Zn), % 4.2 to 5.2
0
Residuals, % 0
0 to 0.4