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EN 2.4964 Cobalt vs. Grade 9 Titanium

EN 2.4964 cobalt belongs to the cobalt alloys classification, while grade 9 titanium belongs to the titanium alloys. There are 27 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is EN 2.4964 cobalt and the bottom bar is grade 9 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
110
Elongation at Break, % 40
11 to 17
Fatigue Strength, MPa 220
330 to 480
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 86
40
Tensile Strength: Ultimate (UTS), MPa 960
700 to 960
Tensile Strength: Yield (Proof), MPa 390
540 to 830

Thermal Properties

Latent Heat of Fusion, J/g 290
410
Melting Completion (Liquidus), °C 1630
1640
Melting Onset (Solidus), °C 1550
1590
Specific Heat Capacity, J/kg-K 400
550
Thermal Conductivity, W/m-K 15
8.1
Thermal Expansion, µm/m-K 12
9.1

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
1.4
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
2.7

Otherwise Unclassified Properties

Density, g/cm3 9.6
4.5
Embodied Carbon, kg CO2/kg material 9.8
36
Embodied Energy, MJ/kg 140
580
Embodied Water, L/kg 450
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 310
89 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 340
1380 to 3220
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 21
35
Strength to Weight: Axial, points 28
43 to 60
Strength to Weight: Bending, points 23
39 to 48
Thermal Diffusivity, mm2/s 3.9
3.3
Thermal Shock Resistance, points 25
52 to 71

Alloy Composition

Aluminum (Al), % 0
2.5 to 3.5
Carbon (C), % 0.050 to 0.15
0 to 0.080
Chromium (Cr), % 19 to 21
0
Cobalt (Co), % 46.4 to 58
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 0 to 3.0
0 to 0.25
Manganese (Mn), % 0 to 2.0
0
Nickel (Ni), % 9.0 to 11
0
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.15
Phosphorus (P), % 0 to 0.020
0
Silicon (Si), % 0 to 0.4
0
Sulfur (S), % 0 to 0.015
0
Titanium (Ti), % 0
92.6 to 95.5
Tungsten (W), % 14 to 16
0
Vanadium (V), % 0
2.0 to 3.0
Residuals, % 0
0 to 0.4