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3105 Aluminum vs. Titanium 15-3-3-3

3105 aluminum belongs to the aluminum alloys classification, while titanium 15-3-3-3 belongs to the titanium alloys. There are 29 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is 3105 aluminum and the bottom bar is titanium 15-3-3-3.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
100
Elongation at Break, % 1.1 to 20
5.7 to 8.0
Fatigue Strength, MPa 39 to 95
610 to 710
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
39
Shear Strength, MPa 77 to 140
660 to 810
Tensile Strength: Ultimate (UTS), MPa 120 to 240
1120 to 1390
Tensile Strength: Yield (Proof), MPa 46 to 220
1100 to 1340

Thermal Properties

Latent Heat of Fusion, J/g 400
390
Maximum Temperature: Mechanical, °C 180
430
Melting Completion (Liquidus), °C 660
1620
Melting Onset (Solidus), °C 640
1560
Specific Heat Capacity, J/kg-K 900
520
Thermal Conductivity, W/m-K 170
8.1
Thermal Expansion, µm/m-K 24
9.8

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 44
1.2
Electrical Conductivity: Equal Weight (Specific), % IACS 140
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
40
Density, g/cm3 2.8
4.8
Embodied Carbon, kg CO2/kg material 8.2
59
Embodied Energy, MJ/kg 150
950
Embodied Water, L/kg 1180
260

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.6 to 19
78 to 89
Stiffness to Weight: Axial, points 14
12
Stiffness to Weight: Bending, points 50
32
Strength to Weight: Axial, points 12 to 24
64 to 80
Strength to Weight: Bending, points 20 to 31
50 to 57
Thermal Diffusivity, mm2/s 68
3.2
Thermal Shock Resistance, points 5.2 to 11
79 to 98

Alloy Composition

Aluminum (Al), % 96 to 99.5
2.5 to 3.5
Carbon (C), % 0
0 to 0.050
Chromium (Cr), % 0 to 0.2
2.5 to 3.5
Copper (Cu), % 0 to 0.3
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 0 to 0.7
0 to 0.25
Magnesium (Mg), % 0.2 to 0.8
0
Manganese (Mn), % 0.3 to 0.8
0
Nitrogen (N), % 0
0 to 0.050
Oxygen (O), % 0
0 to 0.13
Silicon (Si), % 0 to 0.6
0
Tin (Sn), % 0
2.5 to 3.5
Titanium (Ti), % 0 to 0.1
72.6 to 78.5
Vanadium (V), % 0
14 to 16
Zinc (Zn), % 0 to 0.4
0
Residuals, % 0
0 to 0.4