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Grade 11 Titanium vs. EN 2.4964 Cobalt

Grade 11 titanium belongs to the titanium alloys classification, while EN 2.4964 cobalt belongs to the cobalt 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 grade 11 titanium and the bottom bar is EN 2.4964 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
220
Elongation at Break, % 29
40
Fatigue Strength, MPa 170
220
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 38
86
Tensile Strength: Ultimate (UTS), MPa 310
960
Tensile Strength: Yield (Proof), MPa 230
390

Thermal Properties

Latent Heat of Fusion, J/g 420
290
Melting Completion (Liquidus), °C 1660
1630
Melting Onset (Solidus), °C 1610
1550
Specific Heat Capacity, J/kg-K 540
400
Thermal Conductivity, W/m-K 22
15
Thermal Expansion, µm/m-K 9.2
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.7
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 7.3
1.8

Otherwise Unclassified Properties

Density, g/cm3 4.5
9.6
Embodied Carbon, kg CO2/kg material 47
9.8
Embodied Energy, MJ/kg 800
140
Embodied Water, L/kg 470
450

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 81
310
Resilience: Unit (Modulus of Resilience), kJ/m3 240
340
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
21
Strength to Weight: Axial, points 19
28
Strength to Weight: Bending, points 22
23
Thermal Diffusivity, mm2/s 8.9
3.9
Thermal Shock Resistance, points 22
25

Alloy Composition


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Carbon (C), % 0 to 0.080
0.050 to 0.15
Chromium (Cr), % 0
19 to 21
Cobalt (Co), % 0
46.4 to 58
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.2
0 to 3.0
Manganese (Mn), % 0
0 to 2.0
Nickel (Ni), % 0
9.0 to 11
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.18
0
Palladium (Pd), % 0.12 to 0.25
0
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0
0 to 0.4
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 98.8 to 99.88
0
Tungsten (W), % 0
14 to 16
Residuals, % 0 to 0.4
0