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Grade 3 Titanium vs. R30016 Cobalt

Grade 3 titanium belongs to the titanium alloys classification, while R30016 cobalt belongs to the cobalt alloys. There are 29 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is grade 3 titanium and the bottom bar is R30016 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
220
Elongation at Break, % 21
8.4
Fatigue Strength, MPa 300
290
Impact Strength: V-Notched Charpy, J 62
8.0
Poisson's Ratio 0.32
0.28
Reduction in Area, % 34
8.0
Shear Modulus, GPa 39
85
Tensile Strength: Ultimate (UTS), MPa 510
1010
Tensile Strength: Yield (Proof), MPa 440
580

Thermal Properties

Latent Heat of Fusion, J/g 420
320
Melting Completion (Liquidus), °C 1660
1360
Melting Onset (Solidus), °C 1610
1270
Specific Heat Capacity, J/kg-K 540
450
Thermal Conductivity, W/m-K 21
15
Thermal Expansion, µm/m-K 9.2
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.3
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 6.6
2.0

Otherwise Unclassified Properties

Density, g/cm3 4.5
8.5
Embodied Carbon, kg CO2/kg material 31
7.7
Embodied Energy, MJ/kg 510
110
Embodied Water, L/kg 110
500

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
72
Resilience: Unit (Modulus of Resilience), kJ/m3 910
770
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
24
Strength to Weight: Axial, points 32
33
Strength to Weight: Bending, points 32
26
Thermal Diffusivity, mm2/s 8.6
3.9
Thermal Shock Resistance, points 37
24

Alloy Composition

Carbon (C), % 0 to 0.080
0.9 to 1.4
Chromium (Cr), % 0
28 to 32
Cobalt (Co), % 0
49.6 to 66.9
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.3
0 to 3.0
Manganese (Mn), % 0
0.5 to 2.0
Molybdenum (Mo), % 0
0 to 1.5
Nickel (Ni), % 0
0 to 3.0
Nitrogen (N), % 0 to 0.050
0
Oxygen (O), % 0 to 0.35
0
Silicon (Si), % 0
0.2 to 2.0
Titanium (Ti), % 98.8 to 100
0
Tungsten (W), % 0
3.5 to 5.5
Residuals, % 0 to 0.4
0