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Grade 27 Titanium vs. 384.0 Aluminum

Grade 27 titanium belongs to the titanium alloys classification, while 384.0 aluminum belongs to the aluminum alloys. There are 30 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 27 titanium and the bottom bar is 384.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
74
Elongation at Break, % 27
2.5
Fatigue Strength, MPa 170
140
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 41
28
Shear Strength, MPa 180
200
Tensile Strength: Ultimate (UTS), MPa 270
330
Tensile Strength: Yield (Proof), MPa 230
170

Thermal Properties

Latent Heat of Fusion, J/g 420
550
Maximum Temperature: Mechanical, °C 320
170
Melting Completion (Liquidus), °C 1660
580
Melting Onset (Solidus), °C 1610
530
Specific Heat Capacity, J/kg-K 540
870
Thermal Conductivity, W/m-K 21
96
Thermal Expansion, µm/m-K 8.7
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.6
22
Electrical Conductivity: Equal Weight (Specific), % IACS 7.1
69

Otherwise Unclassified Properties

Base Metal Price, % relative 37
11
Density, g/cm3 4.5
2.9
Embodied Carbon, kg CO2/kg material 33
7.4
Embodied Energy, MJ/kg 530
140
Embodied Water, L/kg 320
1010

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 70
6.9
Resilience: Unit (Modulus of Resilience), kJ/m3 240
190
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
49
Strength to Weight: Axial, points 17
32
Strength to Weight: Bending, points 21
37
Thermal Diffusivity, mm2/s 8.8
39
Thermal Shock Resistance, points 21
15

Alloy Composition

Aluminum (Al), % 0
77.3 to 86.5
Carbon (C), % 0 to 0.080
0
Copper (Cu), % 0
3.0 to 4.5
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.2
0 to 1.3
Magnesium (Mg), % 0
0 to 0.1
Manganese (Mn), % 0
0 to 0.5
Nickel (Ni), % 0
0 to 0.5
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
10.5 to 12
Tin (Sn), % 0
0 to 0.35
Titanium (Ti), % 99 to 99.92
0
Zinc (Zn), % 0
0 to 3.0
Residuals, % 0
0 to 0.5