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Grade 27 Titanium vs. 242.0 Aluminum

Grade 27 titanium belongs to the titanium alloys classification, while 242.0 aluminum belongs to the aluminum alloys. There are 30 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 grade 27 titanium and the bottom bar is 242.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
73
Elongation at Break, % 27
0.5 to 1.5
Fatigue Strength, MPa 170
55 to 110
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 41
27
Shear Strength, MPa 180
150 to 240
Tensile Strength: Ultimate (UTS), MPa 270
180 to 290
Tensile Strength: Yield (Proof), MPa 230
120 to 220

Thermal Properties

Latent Heat of Fusion, J/g 420
390
Maximum Temperature: Mechanical, °C 320
210
Melting Completion (Liquidus), °C 1660
640
Melting Onset (Solidus), °C 1610
530
Specific Heat Capacity, J/kg-K 540
870
Thermal Conductivity, W/m-K 21
130 to 170
Thermal Expansion, µm/m-K 8.7
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.6
33 to 44
Electrical Conductivity: Equal Weight (Specific), % IACS 7.1
96 to 130

Otherwise Unclassified Properties

Base Metal Price, % relative 37
12
Density, g/cm3 4.5
3.1
Embodied Carbon, kg CO2/kg material 33
8.3
Embodied Energy, MJ/kg 530
150
Embodied Water, L/kg 320
1130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 70
1.3 to 3.4
Resilience: Unit (Modulus of Resilience), kJ/m3 240
110 to 340
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
45
Strength to Weight: Axial, points 17
16 to 26
Strength to Weight: Bending, points 21
23 to 32
Thermal Diffusivity, mm2/s 8.8
50 to 62
Thermal Shock Resistance, points 21
8.0 to 13

Alloy Composition

Aluminum (Al), % 0
88.4 to 93.6
Carbon (C), % 0 to 0.080
0
Chromium (Cr), % 0
0 to 0.25
Copper (Cu), % 0
3.5 to 4.5
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.2
0 to 1.0
Magnesium (Mg), % 0
1.2 to 1.8
Manganese (Mn), % 0
0 to 0.35
Nickel (Ni), % 0
1.7 to 2.3
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
Titanium (Ti), % 99 to 99.92
0 to 0.25
Zinc (Zn), % 0
0 to 0.35
Residuals, % 0
0 to 0.15