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Nickel 625 vs. EN 2.4964 Cobalt

Nickel 625 belongs to the nickel alloys classification, while EN 2.4964 cobalt belongs to the cobalt alloys. They have a modest 33% of their average alloy composition in common, which, by itself, doesn't mean much. 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 nickel 625 and the bottom bar is EN 2.4964 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
220
Elongation at Break, % 33 to 34
40
Fatigue Strength, MPa 240 to 320
220
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 79
86
Tensile Strength: Ultimate (UTS), MPa 790 to 910
960
Tensile Strength: Yield (Proof), MPa 320 to 450
390

Thermal Properties

Latent Heat of Fusion, J/g 330
290
Melting Completion (Liquidus), °C 1350
1630
Melting Onset (Solidus), °C 1290
1550
Specific Heat Capacity, J/kg-K 440
400
Thermal Conductivity, W/m-K 11
15
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.3
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 1.4
1.8

Otherwise Unclassified Properties

Density, g/cm3 8.6
9.6
Embodied Carbon, kg CO2/kg material 14
9.8
Embodied Energy, MJ/kg 190
140
Embodied Water, L/kg 290
450

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 220 to 250
310
Resilience: Unit (Modulus of Resilience), kJ/m3 260 to 490
340
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
21
Strength to Weight: Axial, points 26 to 29
28
Strength to Weight: Bending, points 22 to 24
23
Thermal Diffusivity, mm2/s 2.9
3.9
Thermal Shock Resistance, points 22 to 25
25

Alloy Composition

Aluminum (Al), % 0 to 0.4
0
Carbon (C), % 0 to 0.1
0.050 to 0.15
Chromium (Cr), % 20 to 23
19 to 21
Cobalt (Co), % 0 to 1.0
46.4 to 58
Iron (Fe), % 0 to 5.0
0 to 3.0
Manganese (Mn), % 0 to 0.5
0 to 2.0
Molybdenum (Mo), % 8.0 to 10
0
Nickel (Ni), % 58 to 68.9
9.0 to 11
Niobium (Nb), % 3.2 to 4.2
0
Phosphorus (P), % 0 to 0.015
0 to 0.020
Silicon (Si), % 0 to 0.5
0 to 0.4
Sulfur (S), % 0 to 0.015
0 to 0.015
Titanium (Ti), % 0 to 0.4
0
Tungsten (W), % 0
14 to 16