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6070 Aluminum vs. Grade 27 Titanium

6070 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 (1, in this case) are not shown.

For each property being compared, the top bar is 6070 aluminum and the bottom bar is grade 27 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
110
Elongation at Break, % 5.6 to 8.6
27
Fatigue Strength, MPa 95 to 130
170
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 26
41
Shear Strength, MPa 220 to 240
180
Tensile Strength: Ultimate (UTS), MPa 370 to 380
270
Tensile Strength: Yield (Proof), MPa 350
230

Thermal Properties

Latent Heat of Fusion, J/g 410
420
Maximum Temperature: Mechanical, °C 160
320
Melting Completion (Liquidus), °C 650
1660
Melting Onset (Solidus), °C 570
1610
Specific Heat Capacity, J/kg-K 900
540
Thermal Conductivity, W/m-K 160
21
Thermal Expansion, µm/m-K 23
8.7

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 41
3.6
Electrical Conductivity: Equal Weight (Specific), % IACS 140
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 1170
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 20 to 32
70
Resilience: Unit (Modulus of Resilience), kJ/m3 880 to 900
240
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
35
Strength to Weight: Axial, points 38
17
Strength to Weight: Bending, points 42 to 43
21
Thermal Diffusivity, mm2/s 65
8.8
Thermal Shock Resistance, points 16 to 17
21

Alloy Composition

Aluminum (Al), % 94.6 to 98
0
Carbon (C), % 0
0 to 0.080
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 0.15 to 0.4
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 0 to 0.5
0 to 0.2
Magnesium (Mg), % 0.5 to 1.2
0
Manganese (Mn), % 0.4 to 1.0
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), % 1.0 to 1.7
0
Titanium (Ti), % 0 to 0.15
99 to 99.92
Zinc (Zn), % 0 to 0.25
0
Residuals, % 0
0 to 0.4