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Grade 27 Titanium vs. 772.0 Aluminum

Grade 27 titanium belongs to the titanium alloys classification, while 772.0 aluminum belongs to the aluminum alloys. There are 29 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 772.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
69
Elongation at Break, % 27
6.3 to 8.4
Fatigue Strength, MPa 170
94 to 160
Poisson's Ratio 0.32
0.32
Shear Modulus, GPa 41
26
Tensile Strength: Ultimate (UTS), MPa 270
260 to 320
Tensile Strength: Yield (Proof), MPa 230
220 to 250

Thermal Properties

Latent Heat of Fusion, J/g 420
380
Maximum Temperature: Mechanical, °C 320
180
Melting Completion (Liquidus), °C 1660
630
Melting Onset (Solidus), °C 1610
580
Specific Heat Capacity, J/kg-K 540
870
Thermal Conductivity, W/m-K 21
150
Thermal Expansion, µm/m-K 8.7
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.6
35
Electrical Conductivity: Equal Weight (Specific), % IACS 7.1
110

Otherwise Unclassified Properties

Base Metal Price, % relative 37
9.5
Density, g/cm3 4.5
3.0
Embodied Carbon, kg CO2/kg material 33
8.0
Embodied Energy, MJ/kg 530
150
Embodied Water, L/kg 320
1140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 70
16 to 25
Resilience: Unit (Modulus of Resilience), kJ/m3 240
350 to 430
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
46
Strength to Weight: Axial, points 17
25 to 31
Strength to Weight: Bending, points 21
31 to 36
Thermal Diffusivity, mm2/s 8.8
58
Thermal Shock Resistance, points 21
11 to 14

Alloy Composition

Aluminum (Al), % 0
91.2 to 93.2
Carbon (C), % 0 to 0.080
0
Chromium (Cr), % 0
0.060 to 0.2
Copper (Cu), % 0
0 to 0.1
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.2
0 to 0.15
Magnesium (Mg), % 0
0.6 to 0.8
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
0 to 0.15
Titanium (Ti), % 99 to 99.92
0.1 to 0.2
Zinc (Zn), % 0
6.0 to 7.0
Residuals, % 0
0 to 0.15