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Grade 27 Titanium vs. EN AC-46000 Aluminum

Grade 27 titanium belongs to the titanium alloys classification, while EN AC-46000 aluminum belongs to the aluminum alloys. There are 29 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 grade 27 titanium and the bottom bar is EN AC-46000 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
73
Elongation at Break, % 27
1.0
Fatigue Strength, MPa 170
110
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 41
28
Tensile Strength: Ultimate (UTS), MPa 270
270
Tensile Strength: Yield (Proof), MPa 230
160

Thermal Properties

Latent Heat of Fusion, J/g 420
530
Maximum Temperature: Mechanical, °C 320
180
Melting Completion (Liquidus), °C 1660
620
Melting Onset (Solidus), °C 1610
530
Specific Heat Capacity, J/kg-K 540
880
Thermal Conductivity, W/m-K 21
100
Thermal Expansion, µm/m-K 8.7
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.6
26
Electrical Conductivity: Equal Weight (Specific), % IACS 7.1
82

Otherwise Unclassified Properties

Base Metal Price, % relative 37
10
Density, g/cm3 4.5
2.8
Embodied Carbon, kg CO2/kg material 33
7.6
Embodied Energy, MJ/kg 530
140
Embodied Water, L/kg 320
1040

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 70
2.3
Resilience: Unit (Modulus of Resilience), kJ/m3 240
170
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
49
Strength to Weight: Axial, points 17
26
Strength to Weight: Bending, points 21
33
Thermal Diffusivity, mm2/s 8.8
42
Thermal Shock Resistance, points 21
12

Alloy Composition

Aluminum (Al), % 0
79.7 to 90
Carbon (C), % 0 to 0.080
0
Chromium (Cr), % 0
0 to 0.15
Copper (Cu), % 0
2.0 to 4.0
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.2
0 to 1.3
Lead (Pb), % 0
0 to 0.35
Magnesium (Mg), % 0
0.050 to 0.55
Manganese (Mn), % 0
0 to 0.55
Nickel (Ni), % 0
0 to 0.55
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
8.0 to 11
Tin (Sn), % 0
0 to 0.15
Titanium (Ti), % 99 to 99.92
0 to 0.25
Zinc (Zn), % 0
0 to 1.2
Residuals, % 0
0 to 0.25