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Grade 27 Titanium vs. EN AC-45100 Aluminum

Grade 27 titanium belongs to the titanium alloys classification, while EN AC-45100 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-45100 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
72
Elongation at Break, % 27
1.0 to 2.8
Fatigue Strength, MPa 170
82 to 99
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 41
27
Tensile Strength: Ultimate (UTS), MPa 270
300 to 360
Tensile Strength: Yield (Proof), MPa 230
210 to 320

Thermal Properties

Latent Heat of Fusion, J/g 420
470
Maximum Temperature: Mechanical, °C 320
170
Melting Completion (Liquidus), °C 1660
630
Melting Onset (Solidus), °C 1610
550
Specific Heat Capacity, J/kg-K 540
890
Thermal Conductivity, W/m-K 21
140
Thermal Expansion, µm/m-K 8.7
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.6
30
Electrical Conductivity: Equal Weight (Specific), % IACS 7.1
95

Otherwise Unclassified Properties

Base Metal Price, % relative 37
10
Density, g/cm3 4.5
2.8
Embodied Carbon, kg CO2/kg material 33
7.9
Embodied Energy, MJ/kg 530
150
Embodied Water, L/kg 320
1100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 70
3.5 to 7.6
Resilience: Unit (Modulus of Resilience), kJ/m3 240
290 to 710
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
49
Strength to Weight: Axial, points 17
30 to 35
Strength to Weight: Bending, points 21
35 to 39
Thermal Diffusivity, mm2/s 8.8
54
Thermal Shock Resistance, points 21
14 to 16

Alloy Composition

Aluminum (Al), % 0
88 to 92.8
Carbon (C), % 0 to 0.080
0
Copper (Cu), % 0
2.6 to 3.6
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.2
0 to 0.6
Lead (Pb), % 0
0 to 0.1
Magnesium (Mg), % 0
0.15 to 0.45
Manganese (Mn), % 0
0 to 0.55
Nickel (Ni), % 0
0 to 0.1
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
4.5 to 6.0
Tin (Sn), % 0
0 to 0.050
Titanium (Ti), % 99 to 99.92
0 to 0.25
Zinc (Zn), % 0
0 to 0.2
Residuals, % 0
0 to 0.15