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328.0 Aluminum vs. Grade 27 Titanium

328.0 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 (4, in this case) are not shown.

For each property being compared, the top bar is 328.0 aluminum and the bottom bar is grade 27 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 72
110
Elongation at Break, % 1.6 to 2.1
27
Fatigue Strength, MPa 55 to 80
170
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 27
41
Tensile Strength: Ultimate (UTS), MPa 200 to 270
270
Tensile Strength: Yield (Proof), MPa 120 to 170
230

Thermal Properties

Latent Heat of Fusion, J/g 510
420
Maximum Temperature: Mechanical, °C 180
320
Melting Completion (Liquidus), °C 620
1660
Melting Onset (Solidus), °C 560
1610
Specific Heat Capacity, J/kg-K 890
540
Thermal Conductivity, W/m-K 120
21
Thermal Expansion, µm/m-K 22
8.7

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 30
3.6
Electrical Conductivity: Equal Weight (Specific), % IACS 99
7.1

Otherwise Unclassified Properties

Base Metal Price, % relative 10
37
Density, g/cm3 2.7
4.5
Embodied Carbon, kg CO2/kg material 7.8
33
Embodied Energy, MJ/kg 140
530
Embodied Water, L/kg 1070
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.8 to 5.0
70
Resilience: Unit (Modulus of Resilience), kJ/m3 92 to 200
240
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 51
35
Strength to Weight: Axial, points 21 to 28
17
Strength to Weight: Bending, points 28 to 34
21
Thermal Diffusivity, mm2/s 50
8.8
Thermal Shock Resistance, points 9.2 to 12
21

Alloy Composition

Aluminum (Al), % 84.5 to 91.1
0
Carbon (C), % 0
0 to 0.080
Chromium (Cr), % 0 to 0.35
0
Copper (Cu), % 1.0 to 2.0
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 0 to 1.0
0 to 0.2
Magnesium (Mg), % 0.2 to 0.6
0
Manganese (Mn), % 0.2 to 0.6
0
Nickel (Ni), % 0 to 0.25
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), % 7.5 to 8.5
0
Titanium (Ti), % 0 to 0.25
99 to 99.92
Zinc (Zn), % 0 to 1.5
0
Residuals, % 0
0 to 0.4