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7129 Aluminum vs. Titanium 6-6-2

7129 Aluminum belongs to the aluminum alloys classification, while titanium 6-6-2 belongs to the titanium alloys. There are 29 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 7129 Aluminum and the bottom bar is titanium 6-6-2.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
120
Elongation at Break, % 9.0 to 9.1
6.7 to 9.0
Fatigue Strength, MPa 150 to 190
590 to 670
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 26
44
Shear Strength, MPa 250 to 260
670 to 800
Tensile Strength: Ultimate (UTS), MPa 430
1140 to 1370
Tensile Strength: Yield (Proof), MPa 380 to 390
1040 to 1230

Thermal Properties

Latent Heat of Fusion, J/g 380
400
Maximum Temperature: Mechanical, °C 180
310
Melting Completion (Liquidus), °C 630
1610
Melting Onset (Solidus), °C 510
1560
Specific Heat Capacity, J/kg-K 880
540
Thermal Conductivity, W/m-K 150
5.5
Thermal Expansion, µm/m-K 24
9.4

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
1.1
Electrical Conductivity: Equal Weight (Specific), % IACS 120
2.1

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
40
Density, g/cm3 2.9
4.8
Embodied Carbon, kg CO2/kg material 8.3
29
Embodied Energy, MJ/kg 150
470
Embodied Water, L/kg 1150
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 37 to 38
89 to 99
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 47
34
Strength to Weight: Axial, points 41
66 to 79
Strength to Weight: Bending, points 43 to 44
50 to 57
Thermal Diffusivity, mm2/s 58
2.1
Thermal Shock Resistance, points 19
75 to 90

Alloy Composition

Aluminum (Al), % 91 to 94
5.0 to 6.0
Carbon (C), % 0
0 to 0.050
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 0.5 to 0.9
0.35 to 1.0
Gallium (Ga), % 0 to 0.030
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 0 to 0.3
0.35 to 1.0
Magnesium (Mg), % 1.3 to 2.0
0
Manganese (Mn), % 0 to 0.1
0
Molybdenum (Mo), % 0
5.0 to 6.0
Nitrogen (N), % 0
0 to 0.040
Oxygen (O), % 0
0 to 0.2
Silicon (Si), % 0 to 0.15
0
Tin (Sn), % 0
1.5 to 2.5
Titanium (Ti), % 0 to 0.050
82.8 to 87.8
Vanadium (V), % 0 to 0.050
0
Zinc (Zn), % 4.2 to 5.2
0
Residuals, % 0
0 to 0.4