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Grade 27 Titanium vs. 359.0 Aluminum

Grade 27 titanium belongs to the titanium alloys classification, while 359.0 aluminum belongs to the aluminum 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 grade 27 titanium and the bottom bar is 359.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
71
Elongation at Break, % 27
3.8 to 4.9
Fatigue Strength, MPa 170
100
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 41
27
Shear Strength, MPa 180
220 to 230
Tensile Strength: Ultimate (UTS), MPa 270
340 to 350
Tensile Strength: Yield (Proof), MPa 230
250 to 280

Thermal Properties

Latent Heat of Fusion, J/g 420
530
Maximum Temperature: Mechanical, °C 320
170
Melting Completion (Liquidus), °C 1660
600
Melting Onset (Solidus), °C 1610
570
Specific Heat Capacity, J/kg-K 540
910
Thermal Conductivity, W/m-K 21
140
Thermal Expansion, µm/m-K 8.7
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.6
35
Electrical Conductivity: Equal Weight (Specific), % IACS 7.1
120

Otherwise Unclassified Properties

Base Metal Price, % relative 37
9.5
Density, g/cm3 4.5
2.6
Embodied Carbon, kg CO2/kg material 33
8.0
Embodied Energy, MJ/kg 530
150
Embodied Water, L/kg 320
1090

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 70
12 to 15
Resilience: Unit (Modulus of Resilience), kJ/m3 240
450 to 540
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 35
54
Strength to Weight: Axial, points 17
37 to 38
Strength to Weight: Bending, points 21
42 to 43
Thermal Diffusivity, mm2/s 8.8
59
Thermal Shock Resistance, points 21
16 to 17

Alloy Composition

Aluminum (Al), % 0
88.9 to 91
Carbon (C), % 0 to 0.080
0
Copper (Cu), % 0
0 to 0.2
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.2
0 to 0.2
Magnesium (Mg), % 0
0.5 to 0.7
Manganese (Mn), % 0
0 to 0.1
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.18
0
Ruthenium (Ru), % 0.080 to 0.14
0
Silicon (Si), % 0
8.5 to 9.5
Titanium (Ti), % 99 to 99.92
0 to 0.2
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.15