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EN 2.4964 Cobalt vs. G-CoCr28 Cobalt

Both EN 2.4964 cobalt and G-CoCr28 cobalt are cobalt alloys. They have 75% of their average alloy composition in common. There are 25 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 EN 2.4964 cobalt and the bottom bar is G-CoCr28 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
210
Elongation at Break, % 40
6.7
Fatigue Strength, MPa 220
130
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 86
83
Tensile Strength: Ultimate (UTS), MPa 960
560
Tensile Strength: Yield (Proof), MPa 390
260

Thermal Properties

Latent Heat of Fusion, J/g 290
320
Melting Completion (Liquidus), °C 1630
1330
Melting Onset (Solidus), °C 1550
1270
Specific Heat Capacity, J/kg-K 400
470
Thermal Conductivity, W/m-K 15
8.5
Thermal Expansion, µm/m-K 12
14

Otherwise Unclassified Properties

Density, g/cm3 9.6
8.1
Embodied Carbon, kg CO2/kg material 9.8
6.2
Embodied Energy, MJ/kg 140
84
Embodied Water, L/kg 450
440

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 310
31
Resilience: Unit (Modulus of Resilience), kJ/m3 340
160
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 21
24
Strength to Weight: Axial, points 28
19
Strength to Weight: Bending, points 23
19
Thermal Diffusivity, mm2/s 3.9
2.2
Thermal Shock Resistance, points 25
14

Alloy Composition

Carbon (C), % 0.050 to 0.15
0.050 to 0.25
Chromium (Cr), % 19 to 21
27 to 30
Cobalt (Co), % 46.4 to 58
48 to 52
Iron (Fe), % 0 to 3.0
9.7 to 24.5
Manganese (Mn), % 0 to 2.0
0 to 1.5
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 9.0 to 11
0 to 4.0
Niobium (Nb), % 0
0 to 0.5
Phosphorus (P), % 0 to 0.020
0 to 0.040
Silicon (Si), % 0 to 0.4
0.5 to 1.5
Sulfur (S), % 0 to 0.015
0 to 0.030
Tungsten (W), % 14 to 16
0