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Grade 27 Titanium vs. 512.0 Aluminum

Grade 27 titanium belongs to the titanium alloys classification, while 512.0 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 512.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
69
Elongation at Break, % 27
2.0
Fatigue Strength, MPa 170
58
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 41
26
Tensile Strength: Ultimate (UTS), MPa 270
130
Tensile Strength: Yield (Proof), MPa 230
83

Thermal Properties

Latent Heat of Fusion, J/g 420
420
Maximum Temperature: Mechanical, °C 320
180
Melting Completion (Liquidus), °C 1660
630
Melting Onset (Solidus), °C 1610
590
Specific Heat Capacity, J/kg-K 540
900
Thermal Conductivity, W/m-K 21
150
Thermal Expansion, µm/m-K 8.7
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.6
38
Electrical Conductivity: Equal Weight (Specific), % IACS 7.1
130

Otherwise Unclassified Properties

Base Metal Price, % relative 37
9.5
Density, g/cm3 4.5
2.7
Embodied Carbon, kg CO2/kg material 33
8.8
Embodied Energy, MJ/kg 530
150
Embodied Water, L/kg 320
1160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 70
2.3
Resilience: Unit (Modulus of Resilience), kJ/m3 240
50
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
51
Strength to Weight: Axial, points 17
14
Strength to Weight: Bending, points 21
22
Thermal Diffusivity, mm2/s 8.8
60
Thermal Shock Resistance, points 21
6.1

Alloy Composition

Aluminum (Al), % 0
90.6 to 95.1
Carbon (C), % 0 to 0.080
0
Chromium (Cr), % 0
0 to 0.25
Copper (Cu), % 0
0 to 0.35
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.2
0 to 0.6
Magnesium (Mg), % 0
3.5 to 4.5
Manganese (Mn), % 0
0 to 0.8
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
1.4 to 2.2
Titanium (Ti), % 99 to 99.92
0 to 0.25
Zinc (Zn), % 0
0 to 0.35
Residuals, % 0
0 to 0.15