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5070 Aluminum vs. Grade 27 Titanium

5070 aluminum belongs to the aluminum alloys classification, while grade 27 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 5070 aluminum and the bottom bar is grade 27 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
110
Elongation at Break, % 20
27
Fatigue Strength, MPa 150
170
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 26
41
Shear Strength, MPa 190
180
Tensile Strength: Ultimate (UTS), MPa 300
270
Tensile Strength: Yield (Proof), MPa 140
230

Thermal Properties

Latent Heat of Fusion, J/g 390
420
Maximum Temperature: Mechanical, °C 190
320
Melting Completion (Liquidus), °C 640
1660
Melting Onset (Solidus), °C 550
1610
Specific Heat Capacity, J/kg-K 900
540
Thermal Conductivity, W/m-K 130
21
Thermal Expansion, µm/m-K 24
8.7

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 31
3.6
Electrical Conductivity: Equal Weight (Specific), % IACS 100
7.1

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
37
Density, g/cm3 2.7
4.5
Embodied Carbon, kg CO2/kg material 8.8
33
Embodied Energy, MJ/kg 150
530
Embodied Water, L/kg 1170
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 51
70
Resilience: Unit (Modulus of Resilience), kJ/m3 150
240
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
35
Strength to Weight: Axial, points 31
17
Strength to Weight: Bending, points 37
21
Thermal Diffusivity, mm2/s 53
8.8
Thermal Shock Resistance, points 14
21

Alloy Composition

Aluminum (Al), % 92.4 to 95.7
0
Carbon (C), % 0
0 to 0.080
Chromium (Cr), % 0 to 0.3
0
Copper (Cu), % 0 to 0.25
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 0 to 0.4
0 to 0.2
Magnesium (Mg), % 3.5 to 4.5
0
Manganese (Mn), % 0.4 to 0.8
0
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.18
Ruthenium (Ru), % 0
0.080 to 0.14
Silicon (Si), % 0 to 0.25
0
Titanium (Ti), % 0 to 0.15
99 to 99.92
Zinc (Zn), % 0.4 to 0.8
0
Residuals, % 0
0 to 0.4