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R30006 Cobalt vs. R56406 Titanium

R30006 cobalt belongs to the cobalt alloys classification, while R56406 titanium belongs to the titanium alloys. There are 27 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is R30006 cobalt and the bottom bar is R56406 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
110
Elongation at Break, % 1.0
9.1
Fatigue Strength, MPa 260
480
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 85
40
Tensile Strength: Ultimate (UTS), MPa 900
980
Tensile Strength: Yield (Proof), MPa 540
850

Thermal Properties

Latent Heat of Fusion, J/g 320
410
Melting Completion (Liquidus), °C 1400
1610
Melting Onset (Solidus), °C 1290
1560
Specific Heat Capacity, J/kg-K 450
560
Thermal Conductivity, W/m-K 15
7.1
Thermal Expansion, µm/m-K 11
9.6

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.6
1.0
Electrical Conductivity: Equal Weight (Specific), % IACS 1.7
2.0

Otherwise Unclassified Properties

Density, g/cm3 8.6
4.5
Embodied Carbon, kg CO2/kg material 7.8
38
Embodied Energy, MJ/kg 110
610
Embodied Water, L/kg 500
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.8
85
Resilience: Unit (Modulus of Resilience), kJ/m3 670
3420
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 23
35
Strength to Weight: Axial, points 29
61
Strength to Weight: Bending, points 24
49
Thermal Diffusivity, mm2/s 3.9
2.8
Thermal Shock Resistance, points 26
69

Alloy Composition

Aluminum (Al), % 0
5.5 to 6.8
Carbon (C), % 0.9 to 1.4
0 to 0.1
Chromium (Cr), % 27 to 32
0
Cobalt (Co), % 48.6 to 68.1
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 0 to 3.0
0 to 0.3
Molybdenum (Mo), % 0 to 1.0
0
Nickel (Ni), % 0 to 3.0
0
Nitrogen (N), % 0
0 to 0.050
Oxygen (O), % 0
0 to 0.2
Silicon (Si), % 0 to 2.0
0
Titanium (Ti), % 0
88.1 to 91
Tungsten (W), % 4.0 to 6.0
0
Vanadium (V), % 0
3.5 to 4.5