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Grade 15 Titanium vs. EN AC-51500 Aluminum

Grade 15 titanium belongs to the titanium alloys classification, while EN AC-51500 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 15 titanium and the bottom bar is EN AC-51500 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
68
Elongation at Break, % 20
5.6
Fatigue Strength, MPa 290
120
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 41
26
Tensile Strength: Ultimate (UTS), MPa 540
280
Tensile Strength: Yield (Proof), MPa 430
160

Thermal Properties

Latent Heat of Fusion, J/g 420
430
Maximum Temperature: Mechanical, °C 320
170
Melting Completion (Liquidus), °C 1660
630
Melting Onset (Solidus), °C 1610
590
Specific Heat Capacity, J/kg-K 540
910
Thermal Conductivity, W/m-K 21
120
Thermal Expansion, µm/m-K 8.7
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.4
26
Electrical Conductivity: Equal Weight (Specific), % IACS 6.7
88

Otherwise Unclassified Properties

Base Metal Price, % relative 37
9.5
Density, g/cm3 4.5
2.6
Embodied Carbon, kg CO2/kg material 32
9.0
Embodied Energy, MJ/kg 520
150
Embodied Water, L/kg 210
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
13
Resilience: Unit (Modulus of Resilience), kJ/m3 870
190
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
52
Strength to Weight: Axial, points 33
29
Strength to Weight: Bending, points 33
36
Thermal Diffusivity, mm2/s 8.4
49
Thermal Shock Resistance, points 41
13

Alloy Composition

Aluminum (Al), % 0
89.8 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 0.3
0 to 0.25
Magnesium (Mg), % 0
4.7 to 6.0
Manganese (Mn), % 0
0.4 to 0.8
Nickel (Ni), % 0.4 to 0.6
0
Nitrogen (N), % 0 to 0.050
0
Oxygen (O), % 0 to 0.25
0
Ruthenium (Ru), % 0.040 to 0.060
0
Silicon (Si), % 0
1.8 to 2.6
Titanium (Ti), % 98.2 to 99.56
0 to 0.25
Zinc (Zn), % 0
0 to 0.070
Residuals, % 0
0 to 0.15