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G-CoCr28 Cobalt vs. Grade 14 Titanium

G-CoCr28 cobalt belongs to the cobalt alloys classification, while grade 14 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.

For each property being compared, the top bar is G-CoCr28 cobalt and the bottom bar is grade 14 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
110
Elongation at Break, % 6.7
23
Fatigue Strength, MPa 130
220
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 83
41
Tensile Strength: Ultimate (UTS), MPa 560
460
Tensile Strength: Yield (Proof), MPa 260
310

Thermal Properties

Latent Heat of Fusion, J/g 320
420
Maximum Temperature: Mechanical, °C 1200
320
Melting Completion (Liquidus), °C 1330
1660
Melting Onset (Solidus), °C 1270
1610
Specific Heat Capacity, J/kg-K 470
540
Thermal Conductivity, W/m-K 8.5
21
Thermal Expansion, µm/m-K 14
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 100
37
Density, g/cm3 8.1
4.5
Embodied Carbon, kg CO2/kg material 6.2
32
Embodied Energy, MJ/kg 84
520
Embodied Water, L/kg 440
210

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 31
93
Resilience: Unit (Modulus of Resilience), kJ/m3 160
450
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 24
35
Strength to Weight: Axial, points 19
28
Strength to Weight: Bending, points 19
29
Thermal Diffusivity, mm2/s 2.2
8.5
Thermal Shock Resistance, points 14
35

Alloy Composition

Carbon (C), % 0.050 to 0.25
0 to 0.080
Chromium (Cr), % 27 to 30
0
Cobalt (Co), % 48 to 52
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 9.7 to 24.5
0 to 0.3
Manganese (Mn), % 0 to 1.5
0
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 0 to 4.0
0.4 to 0.6
Niobium (Nb), % 0 to 0.5
0
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.15
Phosphorus (P), % 0 to 0.040
0
Ruthenium (Ru), % 0
0.040 to 0.060
Silicon (Si), % 0.5 to 1.5
0
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
98.4 to 99.56
Residuals, % 0
0 to 0.4