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Grade 27 Titanium vs. 6101B Aluminum

Grade 27 titanium belongs to the titanium alloys classification, while 6101B aluminum belongs to the aluminum alloys. There are 30 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is grade 27 titanium and the bottom bar is 6101B aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
68
Elongation at Break, % 27
9.1 to 13
Fatigue Strength, MPa 170
62 to 70
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 41
26
Shear Strength, MPa 180
120 to 150
Tensile Strength: Ultimate (UTS), MPa 270
190 to 250
Tensile Strength: Yield (Proof), MPa 230
140 to 180

Thermal Properties

Latent Heat of Fusion, J/g 420
400
Maximum Temperature: Mechanical, °C 320
160
Melting Completion (Liquidus), °C 1660
640
Melting Onset (Solidus), °C 1610
630
Specific Heat Capacity, J/kg-K 540
900
Thermal Conductivity, W/m-K 21
210
Thermal Expansion, µm/m-K 8.7
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.6
57
Electrical Conductivity: Equal Weight (Specific), % IACS 7.1
190

Otherwise Unclassified Properties

Base Metal Price, % relative 37
9.5
Density, g/cm3 4.5
2.7
Embodied Carbon, kg CO2/kg material 33
8.3
Embodied Energy, MJ/kg 530
150
Embodied Water, L/kg 320
1190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 70
20 to 23
Resilience: Unit (Modulus of Resilience), kJ/m3 240
140 to 240
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
50
Strength to Weight: Axial, points 17
20 to 25
Strength to Weight: Bending, points 21
27 to 32
Thermal Diffusivity, mm2/s 8.8
87
Thermal Shock Resistance, points 21
8.5 to 11

Alloy Composition

Aluminum (Al), % 0
98.2 to 99.3
Carbon (C), % 0 to 0.080
0
Copper (Cu), % 0
0 to 0.050
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.2
0.1 to 0.3
Magnesium (Mg), % 0
0.35 to 0.6
Manganese (Mn), % 0
0 to 0.050
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
0.3 to 0.6
Titanium (Ti), % 99 to 99.92
0
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.1