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Grade 2 Titanium vs. EN AC-21100 Aluminum

Grade 2 titanium belongs to the titanium alloys classification, while EN AC-21100 aluminum belongs to the aluminum 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 grade 2 titanium and the bottom bar is EN AC-21100 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
100 to 110
Elastic (Young's, Tensile) Modulus, GPa 110
71
Elongation at Break, % 23
6.2 to 7.3
Fatigue Strength, MPa 250
79 to 87
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 38
27
Tensile Strength: Ultimate (UTS), MPa 420
340 to 350
Tensile Strength: Yield (Proof), MPa 360
210 to 240

Thermal Properties

Latent Heat of Fusion, J/g 420
390
Maximum Temperature: Mechanical, °C 320
170
Melting Completion (Liquidus), °C 1660
670
Melting Onset (Solidus), °C 1610
550
Specific Heat Capacity, J/kg-K 540
880
Thermal Conductivity, W/m-K 22
130
Thermal Expansion, µm/m-K 9.0
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.6
34
Electrical Conductivity: Equal Weight (Specific), % IACS 7.2
100

Otherwise Unclassified Properties

Base Metal Price, % relative 37
11
Density, g/cm3 4.5
3.0
Embodied Carbon, kg CO2/kg material 31
8.0
Embodied Energy, MJ/kg 510
150
Embodied Water, L/kg 110
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 92
19 to 21
Resilience: Unit (Modulus of Resilience), kJ/m3 600
300 to 400
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
46
Strength to Weight: Axial, points 26
31 to 33
Strength to Weight: Bending, points 28
36 to 37
Thermal Diffusivity, mm2/s 8.9
48
Thermal Shock Resistance, points 32
15

Alloy Composition

Aluminum (Al), % 0
93.4 to 95.7
Carbon (C), % 0 to 0.080
0
Copper (Cu), % 0
4.2 to 5.2
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.3
0 to 0.19
Manganese (Mn), % 0
0 to 0.55
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.25
0
Silicon (Si), % 0
0 to 0.18
Titanium (Ti), % 98.9 to 100
0.15 to 0.3
Zinc (Zn), % 0
0 to 0.070
Residuals, % 0
0 to 0.1