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Grade 15 Titanium vs. B390.0 Aluminum

Grade 15 titanium belongs to the titanium alloys classification, while B390.0 aluminum belongs to the aluminum alloys. There are 29 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is grade 15 titanium and the bottom bar is B390.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
76
Elongation at Break, % 20
0.88
Fatigue Strength, MPa 290
170
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 41
29
Tensile Strength: Ultimate (UTS), MPa 540
320
Tensile Strength: Yield (Proof), MPa 430
250

Thermal Properties

Latent Heat of Fusion, J/g 420
640
Maximum Temperature: Mechanical, °C 320
170
Melting Completion (Liquidus), °C 1660
580
Melting Onset (Solidus), °C 1610
580
Specific Heat Capacity, J/kg-K 540
880
Thermal Conductivity, W/m-K 21
130
Thermal Expansion, µm/m-K 8.7
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.4
27
Electrical Conductivity: Equal Weight (Specific), % IACS 6.7
88

Otherwise Unclassified Properties

Base Metal Price, % relative 37
11
Density, g/cm3 4.5
2.8
Embodied Carbon, kg CO2/kg material 32
7.3
Embodied Energy, MJ/kg 520
130
Embodied Water, L/kg 210
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
2.6
Resilience: Unit (Modulus of Resilience), kJ/m3 870
410
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 35
51
Strength to Weight: Axial, points 33
32
Strength to Weight: Bending, points 33
38
Thermal Diffusivity, mm2/s 8.4
55
Thermal Shock Resistance, points 41
15

Alloy Composition

Aluminum (Al), % 0
72.7 to 79.6
Carbon (C), % 0 to 0.080
0
Copper (Cu), % 0
4.0 to 5.0
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.3
0 to 1.3
Magnesium (Mg), % 0
0.45 to 0.65
Manganese (Mn), % 0
0 to 0.5
Nickel (Ni), % 0.4 to 0.6
0 to 0.1
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
16 to 18
Titanium (Ti), % 98.2 to 99.56
0 to 0.1
Zinc (Zn), % 0
0 to 1.5
Residuals, % 0
0 to 0.2