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Grade 27 Titanium vs. 356.0 Aluminum

Grade 27 titanium belongs to the titanium alloys classification, while 356.0 aluminum belongs to the aluminum alloys. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is grade 27 titanium and the bottom bar is 356.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
70
Elongation at Break, % 27
2.0 to 3.8
Fatigue Strength, MPa 170
55 to 75
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 41
27
Shear Strength, MPa 180
140 to 190
Tensile Strength: Ultimate (UTS), MPa 270
160 to 240
Tensile Strength: Yield (Proof), MPa 230
100 to 190

Thermal Properties

Latent Heat of Fusion, J/g 420
500
Maximum Temperature: Mechanical, °C 320
170
Melting Completion (Liquidus), °C 1660
620
Melting Onset (Solidus), °C 1610
570
Specific Heat Capacity, J/kg-K 540
900
Thermal Conductivity, W/m-K 21
150 to 170
Thermal Expansion, µm/m-K 8.7
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.6
40 to 43
Electrical Conductivity: Equal Weight (Specific), % IACS 7.1
140 to 150

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
3.2 to 8.2
Resilience: Unit (Modulus of Resilience), kJ/m3 240
70 to 250
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 35
53
Strength to Weight: Axial, points 17
17 to 26
Strength to Weight: Bending, points 21
25 to 33
Thermal Diffusivity, mm2/s 8.8
64 to 71
Thermal Shock Resistance, points 21
7.6 to 11

Alloy Composition

Aluminum (Al), % 0
90.1 to 93.3
Carbon (C), % 0 to 0.080
0
Copper (Cu), % 0
0 to 0.25
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.2
0 to 0.6
Magnesium (Mg), % 0
0.2 to 0.45
Manganese (Mn), % 0
0 to 0.35
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 0.35
Residuals, % 0
0 to 0.15