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Grade 16 Titanium vs. R31233 Cobalt

Grade 16 titanium belongs to the titanium alloys classification, while R31233 cobalt belongs to the cobalt alloys. There are 27 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 16 titanium and the bottom bar is R31233 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
220
Elongation at Break, % 23
17
Fatigue Strength, MPa 240
220
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 38
85
Tensile Strength: Ultimate (UTS), MPa 400
1020
Tensile Strength: Yield (Proof), MPa 340
420

Thermal Properties

Latent Heat of Fusion, J/g 420
320
Melting Completion (Liquidus), °C 1660
1350
Melting Onset (Solidus), °C 1610
1330
Specific Heat Capacity, J/kg-K 540
440
Thermal Conductivity, W/m-K 22
12
Thermal Expansion, µm/m-K 9.2
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.6
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 7.2
2.1

Otherwise Unclassified Properties

Density, g/cm3 4.5
8.6
Embodied Carbon, kg CO2/kg material 36
8.4
Embodied Energy, MJ/kg 600
110
Embodied Water, L/kg 230
480

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 86
140
Resilience: Unit (Modulus of Resilience), kJ/m3 550
410
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
23
Strength to Weight: Axial, points 25
33
Strength to Weight: Bending, points 27
26
Thermal Diffusivity, mm2/s 8.9
3.2
Thermal Shock Resistance, points 29
25

Alloy Composition

Boron (B), % 0
0 to 0.015
Carbon (C), % 0 to 0.080
0.020 to 0.1
Chromium (Cr), % 0
23.5 to 27.5
Cobalt (Co), % 0
44.7 to 63.3
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.3
1.0 to 5.0
Manganese (Mn), % 0
0.1 to 1.5
Molybdenum (Mo), % 0
4.0 to 6.0
Nickel (Ni), % 0
7.0 to 11
Nitrogen (N), % 0 to 0.030
0.030 to 0.12
Oxygen (O), % 0 to 0.25
0
Palladium (Pd), % 0.040 to 0.080
0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0
0.050 to 1.0
Sulfur (S), % 0
0 to 0.020
Titanium (Ti), % 98.8 to 99.96
0
Tungsten (W), % 0
1.0 to 3.0
Residuals, % 0 to 0.4
0