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Grade 27 Titanium vs. EN AC-42200 Aluminum

Grade 27 titanium belongs to the titanium alloys classification, while EN AC-42200 aluminum belongs to the aluminum alloys. There are 29 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 EN AC-42200 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
70
Elongation at Break, % 27
3.0 to 6.7
Fatigue Strength, MPa 170
86 to 90
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 41
26
Tensile Strength: Ultimate (UTS), MPa 270
320
Tensile Strength: Yield (Proof), MPa 230
240 to 260

Thermal Properties

Latent Heat of Fusion, J/g 420
500
Maximum Temperature: Mechanical, °C 320
170
Melting Completion (Liquidus), °C 1660
610
Melting Onset (Solidus), °C 1610
600
Specific Heat Capacity, J/kg-K 540
910
Thermal Conductivity, W/m-K 21
150
Thermal Expansion, µm/m-K 8.7
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.6
40
Electrical Conductivity: Equal Weight (Specific), % IACS 7.1
140

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
1110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 70
9.0 to 20
Resilience: Unit (Modulus of Resilience), kJ/m3 240
410 to 490
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 35
53
Strength to Weight: Axial, points 17
34 to 35
Strength to Weight: Bending, points 21
40 to 41
Thermal Diffusivity, mm2/s 8.8
66
Thermal Shock Resistance, points 21
15

Alloy Composition

Aluminum (Al), % 0
91 to 93.1
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 to 0.19
Magnesium (Mg), % 0
0.45 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
6.5 to 7.5
Titanium (Ti), % 99 to 99.92
0 to 0.25
Zinc (Zn), % 0
0 to 0.070
Residuals, % 0
0 to 0.1