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Grade 27 Titanium vs. 850.0 Aluminum

Grade 27 titanium belongs to the titanium alloys classification, while 850.0 aluminum belongs to the aluminum alloys. There are 30 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 grade 27 titanium and the bottom bar is 850.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
69
Elongation at Break, % 27
7.9
Fatigue Strength, MPa 170
59
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 41
26
Shear Strength, MPa 180
100
Tensile Strength: Ultimate (UTS), MPa 270
140
Tensile Strength: Yield (Proof), MPa 230
76

Thermal Properties

Latent Heat of Fusion, J/g 420
380
Maximum Temperature: Mechanical, °C 320
190
Melting Completion (Liquidus), °C 1660
650
Melting Onset (Solidus), °C 1610
370
Specific Heat Capacity, J/kg-K 540
850
Thermal Conductivity, W/m-K 21
180
Thermal Expansion, µm/m-K 8.7
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.6
47
Electrical Conductivity: Equal Weight (Specific), % IACS 7.1
140

Otherwise Unclassified Properties

Base Metal Price, % relative 37
14
Density, g/cm3 4.5
3.1
Embodied Carbon, kg CO2/kg material 33
8.5
Embodied Energy, MJ/kg 530
160
Embodied Water, L/kg 320
1160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 70
9.1
Resilience: Unit (Modulus of Resilience), kJ/m3 240
42
Stiffness to Weight: Axial, points 13
12
Stiffness to Weight: Bending, points 35
44
Strength to Weight: Axial, points 17
12
Strength to Weight: Bending, points 21
19
Thermal Diffusivity, mm2/s 8.8
69
Thermal Shock Resistance, points 21
6.1

Alloy Composition

Aluminum (Al), % 0
88.3 to 93.1
Carbon (C), % 0 to 0.080
0
Copper (Cu), % 0
0.7 to 1.3
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.2
0 to 0.7
Magnesium (Mg), % 0
0 to 0.1
Manganese (Mn), % 0
0 to 0.1
Nickel (Ni), % 0
0.7 to 1.3
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 0.7
Tin (Sn), % 0
5.5 to 7.0
Titanium (Ti), % 99 to 99.92
0 to 0.2
Residuals, % 0
0 to 0.3