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390.0 Aluminum vs. Grade 27 Titanium

390.0 aluminum belongs to the aluminum alloys classification, while grade 27 titanium 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 390.0 aluminum and the bottom bar is grade 27 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 75
110
Elongation at Break, % 1.0
27
Fatigue Strength, MPa 76 to 110
170
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 28
41
Tensile Strength: Ultimate (UTS), MPa 280 to 300
270
Tensile Strength: Yield (Proof), MPa 240 to 270
230

Thermal Properties

Latent Heat of Fusion, J/g 640
420
Maximum Temperature: Mechanical, °C 170
320
Melting Completion (Liquidus), °C 650
1660
Melting Onset (Solidus), °C 560
1610
Specific Heat Capacity, J/kg-K 880
540
Thermal Conductivity, W/m-K 130
21
Thermal Expansion, µm/m-K 18
8.7

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 24 to 25
3.6
Electrical Conductivity: Equal Weight (Specific), % IACS 79 to 83
7.1

Otherwise Unclassified Properties

Base Metal Price, % relative 11
37
Density, g/cm3 2.7
4.5
Embodied Carbon, kg CO2/kg material 7.3
33
Embodied Energy, MJ/kg 130
530
Embodied Water, L/kg 950
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.7 to 2.9
70
Resilience: Unit (Modulus of Resilience), kJ/m3 380 to 470
240
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 52
35
Strength to Weight: Axial, points 28 to 30
17
Strength to Weight: Bending, points 35 to 36
21
Thermal Diffusivity, mm2/s 56
8.8
Thermal Shock Resistance, points 14 to 15
21

Alloy Composition

Aluminum (Al), % 74.5 to 79.6
0
Carbon (C), % 0
0 to 0.080
Copper (Cu), % 4.0 to 5.0
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 0 to 1.3
0 to 0.2
Magnesium (Mg), % 0.45 to 0.65
0
Manganese (Mn), % 0 to 0.1
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), % 16 to 18
0
Titanium (Ti), % 0 to 0.2
99 to 99.92
Zinc (Zn), % 0 to 0.1
0
Residuals, % 0
0 to 0.4