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R30075 Cobalt vs. Grade 12 Titanium

R30075 cobalt belongs to the cobalt alloys classification, while grade 12 titanium belongs to the titanium alloys. There are 28 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is R30075 cobalt and the bottom bar is grade 12 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210 to 250
110
Elongation at Break, % 12
21
Fatigue Strength, MPa 250 to 840
280
Poisson's Ratio 0.29
0.32
Reduction in Area, % 20
28
Shear Modulus, GPa 82 to 98
39
Tensile Strength: Ultimate (UTS), MPa 780 to 1280
530
Tensile Strength: Yield (Proof), MPa 480 to 840
410

Thermal Properties

Latent Heat of Fusion, J/g 320
420
Melting Completion (Liquidus), °C 1360
1660
Melting Onset (Solidus), °C 1290
1610
Specific Heat Capacity, J/kg-K 450
540
Thermal Conductivity, W/m-K 13
21
Thermal Expansion, µm/m-K 12
9.6

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
3.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
6.6

Otherwise Unclassified Properties

Density, g/cm3 8.4
4.5
Embodied Carbon, kg CO2/kg material 8.1
31
Embodied Energy, MJ/kg 110
500
Embodied Water, L/kg 530
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 84 to 140
110
Resilience: Unit (Modulus of Resilience), kJ/m3 560 to 1410
770
Stiffness to Weight: Axial, points 14 to 17
13
Stiffness to Weight: Bending, points 24 to 25
35
Strength to Weight: Axial, points 26 to 42
32
Strength to Weight: Bending, points 22 to 31
32
Thermal Diffusivity, mm2/s 3.5
8.5
Thermal Shock Resistance, points 21 to 29
37

Alloy Composition

Aluminum (Al), % 0 to 0.1
0
Boron (B), % 0 to 0.010
0
Carbon (C), % 0 to 0.35
0 to 0.080
Chromium (Cr), % 27 to 30
0
Cobalt (Co), % 58.7 to 68
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 0 to 0.75
0 to 0.3
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 5.0 to 7.0
0.2 to 0.4
Nickel (Ni), % 0 to 0.5
0.6 to 0.9
Nitrogen (N), % 0 to 0.25
0 to 0.030
Oxygen (O), % 0
0 to 0.25
Phosphorus (P), % 0 to 0.020
0
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.010
0
Titanium (Ti), % 0 to 0.1
97.6 to 99.2
Tungsten (W), % 0 to 0.2
0
Residuals, % 0
0 to 0.4