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EN 2.4964 Cobalt vs. S42300 Stainless Steel

EN 2.4964 cobalt belongs to the cobalt alloys classification, while S42300 stainless steel belongs to the iron alloys. There are 27 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is EN 2.4964 cobalt and the bottom bar is S42300 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
200
Elongation at Break, % 40
9.1
Fatigue Strength, MPa 220
440
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 86
77
Tensile Strength: Ultimate (UTS), MPa 960
1100
Tensile Strength: Yield (Proof), MPa 390
850

Thermal Properties

Latent Heat of Fusion, J/g 290
270
Melting Completion (Liquidus), °C 1630
1470
Melting Onset (Solidus), °C 1550
1420
Specific Heat Capacity, J/kg-K 400
470
Thermal Conductivity, W/m-K 15
25
Thermal Expansion, µm/m-K 12
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
4.5
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
5.2

Otherwise Unclassified Properties

Density, g/cm3 9.6
7.8
Embodied Carbon, kg CO2/kg material 9.8
3.2
Embodied Energy, MJ/kg 140
44
Embodied Water, L/kg 450
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 310
93
Resilience: Unit (Modulus of Resilience), kJ/m3 340
1840
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 21
25
Strength to Weight: Axial, points 28
39
Strength to Weight: Bending, points 23
30
Thermal Diffusivity, mm2/s 3.9
6.8
Thermal Shock Resistance, points 25
40

Alloy Composition

Carbon (C), % 0.050 to 0.15
0.27 to 0.32
Chromium (Cr), % 19 to 21
11 to 12
Cobalt (Co), % 46.4 to 58
0
Iron (Fe), % 0 to 3.0
82 to 85.1
Manganese (Mn), % 0 to 2.0
1.0 to 1.4
Molybdenum (Mo), % 0
2.5 to 3.0
Nickel (Ni), % 9.0 to 11
0 to 0.5
Phosphorus (P), % 0 to 0.020
0 to 0.025
Silicon (Si), % 0 to 0.4
0 to 0.5
Sulfur (S), % 0 to 0.015
0 to 0.025
Tungsten (W), % 14 to 16
0
Vanadium (V), % 0
0.2 to 0.3