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6063 Aluminum vs. Grade 27 Titanium

6063 aluminum belongs to the aluminum alloys classification, while grade 27 titanium belongs to the titanium alloys. There are 30 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 6063 aluminum and the bottom bar is grade 27 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
110
Elongation at Break, % 7.3 to 21
27
Fatigue Strength, MPa 39 to 95
170
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 26
41
Shear Strength, MPa 70 to 190
180
Tensile Strength: Ultimate (UTS), MPa 110 to 300
270
Tensile Strength: Yield (Proof), MPa 49 to 270
230

Thermal Properties

Latent Heat of Fusion, J/g 400
420
Maximum Temperature: Mechanical, °C 160
320
Melting Completion (Liquidus), °C 650
1660
Melting Onset (Solidus), °C 620
1610
Specific Heat Capacity, J/kg-K 900
540
Thermal Conductivity, W/m-K 190 to 220
21
Thermal Expansion, µm/m-K 23
8.7

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 49 to 58
3.6
Electrical Conductivity: Equal Weight (Specific), % IACS 160 to 190
7.1

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
37
Density, g/cm3 2.7
4.5
Embodied Carbon, kg CO2/kg material 8.3
33
Embodied Energy, MJ/kg 150
530
Embodied Water, L/kg 1190
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 13 to 27
70
Resilience: Unit (Modulus of Resilience), kJ/m3 18 to 540
240
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
35
Strength to Weight: Axial, points 11 to 31
17
Strength to Weight: Bending, points 18 to 37
21
Thermal Diffusivity, mm2/s 79 to 89
8.8
Thermal Shock Resistance, points 4.8 to 13
21

Alloy Composition

Aluminum (Al), % 97.5 to 99.4
0
Carbon (C), % 0
0 to 0.080
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 0 to 0.1
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 0 to 0.35
0 to 0.2
Magnesium (Mg), % 0.45 to 0.9
0
Manganese (Mn), % 0 to 0.1
0
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.18
Ruthenium (Ru), % 0
0.080 to 0.14
Silicon (Si), % 0.2 to 0.6
0
Titanium (Ti), % 0 to 0.1
99 to 99.92
Zinc (Zn), % 0 to 0.1
0
Residuals, % 0
0 to 0.4