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518.0 Aluminum vs. Grade 27 Titanium

518.0 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 (2, in this case) are not shown.

For each property being compared, the top bar is 518.0 aluminum and the bottom bar is grade 27 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 67
110
Elongation at Break, % 5.0
27
Fatigue Strength, MPa 140
170
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 25
41
Shear Strength, MPa 200
180
Tensile Strength: Ultimate (UTS), MPa 310
270
Tensile Strength: Yield (Proof), MPa 190
230

Thermal Properties

Latent Heat of Fusion, J/g 390
420
Maximum Temperature: Mechanical, °C 170
320
Melting Completion (Liquidus), °C 620
1660
Melting Onset (Solidus), °C 560
1610
Specific Heat Capacity, J/kg-K 900
540
Thermal Conductivity, W/m-K 98
21
Thermal Expansion, µm/m-K 24
8.7

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 24
3.6
Electrical Conductivity: Equal Weight (Specific), % IACS 81
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 9.4
33
Embodied Energy, MJ/kg 150
530
Embodied Water, L/kg 1160
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 14
70
Resilience: Unit (Modulus of Resilience), kJ/m3 270
240
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 51
35
Strength to Weight: Axial, points 32
17
Strength to Weight: Bending, points 38
21
Thermal Diffusivity, mm2/s 40
8.8
Thermal Shock Resistance, points 14
21

Alloy Composition

Aluminum (Al), % 88.1 to 92.5
0
Carbon (C), % 0
0 to 0.080
Copper (Cu), % 0 to 0.25
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 0 to 1.8
0 to 0.2
Magnesium (Mg), % 7.5 to 8.5
0
Manganese (Mn), % 0 to 0.35
0
Nickel (Ni), % 0 to 0.15
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 0.35
0
Tin (Sn), % 0 to 0.15
0
Titanium (Ti), % 0
99 to 99.92
Zinc (Zn), % 0 to 0.15
0
Residuals, % 0
0 to 0.4