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3105 Aluminum vs. Grade 5 Titanium

3105 aluminum belongs to the aluminum alloys classification, while grade 5 titanium belongs to the titanium alloys. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is 3105 aluminum and the bottom bar is grade 5 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
110
Elongation at Break, % 1.1 to 20
8.6 to 11
Fatigue Strength, MPa 39 to 95
530 to 630
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 26
40
Shear Strength, MPa 77 to 140
600 to 710
Tensile Strength: Ultimate (UTS), MPa 120 to 240
1000 to 1190
Tensile Strength: Yield (Proof), MPa 46 to 220
910 to 1110

Thermal Properties

Latent Heat of Fusion, J/g 400
410
Maximum Temperature: Mechanical, °C 180
330
Melting Completion (Liquidus), °C 660
1610
Melting Onset (Solidus), °C 640
1650
Specific Heat Capacity, J/kg-K 900
560
Thermal Conductivity, W/m-K 170
6.8
Thermal Expansion, µm/m-K 24
8.9

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 44
1.0
Electrical Conductivity: Equal Weight (Specific), % IACS 140
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
36
Density, g/cm3 2.8
4.4
Embodied Carbon, kg CO2/kg material 8.2
38
Embodied Energy, MJ/kg 150
610
Embodied Water, L/kg 1180
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.6 to 19
100 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 15 to 340
3980 to 5880
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
35
Strength to Weight: Axial, points 12 to 24
62 to 75
Strength to Weight: Bending, points 20 to 31
50 to 56
Thermal Diffusivity, mm2/s 68
2.7
Thermal Shock Resistance, points 5.2 to 11
76 to 91

Alloy Composition

Aluminum (Al), % 96 to 99.5
5.5 to 6.8
Carbon (C), % 0
0 to 0.080
Chromium (Cr), % 0 to 0.2
0
Copper (Cu), % 0 to 0.3
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 0 to 0.7
0 to 0.4
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 0.2
Silicon (Si), % 0 to 0.6
0
Titanium (Ti), % 0 to 0.1
87.4 to 91
Vanadium (V), % 0
3.5 to 4.5
Yttrium (Y), % 0
0 to 0.0050
Zinc (Zn), % 0 to 0.4
0
Residuals, % 0
0 to 0.4

Comparable Variants