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R30012 Cobalt vs. Grade 32 Titanium

R30012 cobalt belongs to the cobalt alloys classification, while grade 32 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 R30012 cobalt and the bottom bar is grade 32 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
110
Elongation at Break, % 1.0
11
Fatigue Strength, MPa 320
390
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 86
40
Tensile Strength: Ultimate (UTS), MPa 830
770
Tensile Strength: Yield (Proof), MPa 650
670

Thermal Properties

Latent Heat of Fusion, J/g 320
410
Melting Completion (Liquidus), °C 1470
1610
Melting Onset (Solidus), °C 1280
1560
Specific Heat Capacity, J/kg-K 440
550
Thermal Conductivity, W/m-K 15
7.5
Thermal Expansion, µm/m-K 12
8.2

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.8
1.0
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
2.1

Otherwise Unclassified Properties

Density, g/cm3 8.8
4.5
Embodied Carbon, kg CO2/kg material 8.3
32
Embodied Energy, MJ/kg 120
530
Embodied Water, L/kg 480
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.7
83
Resilience: Unit (Modulus of Resilience), kJ/m3 960
2100
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 23
35
Strength to Weight: Axial, points 26
47
Strength to Weight: Bending, points 22
41
Thermal Diffusivity, mm2/s 3.8
3.0
Thermal Shock Resistance, points 23
63

Alloy Composition

Aluminum (Al), % 0
4.5 to 5.5
Carbon (C), % 1.4 to 2.0
0 to 0.080
Chromium (Cr), % 27 to 32
0
Cobalt (Co), % 47.5 to 64.1
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 0 to 3.0
0 to 0.25
Molybdenum (Mo), % 0 to 1.0
0.6 to 1.2
Nickel (Ni), % 0 to 3.0
0
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.11
Silicon (Si), % 0 to 2.0
0.060 to 0.14
Tin (Sn), % 0
0.6 to 1.4
Titanium (Ti), % 0
88.1 to 93
Tungsten (W), % 7.5 to 9.5
0
Vanadium (V), % 0
0.6 to 1.4
Zirconium (Zr), % 0
0.6 to 1.4
Residuals, % 0
0 to 0.4