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EN 2.4964 Cobalt vs. EN 1.7710 Steel

EN 2.4964 cobalt belongs to the cobalt alloys classification, while EN 1.7710 steel belongs to the iron alloys. There are 27 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is EN 2.4964 cobalt and the bottom bar is EN 1.7710 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
190
Elongation at Break, % 40
6.8 to 11
Fatigue Strength, MPa 220
500 to 620
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 86
73
Tensile Strength: Ultimate (UTS), MPa 960
930 to 1070
Tensile Strength: Yield (Proof), MPa 390
800 to 1060

Thermal Properties

Latent Heat of Fusion, J/g 290
260
Melting Completion (Liquidus), °C 1630
1470
Melting Onset (Solidus), °C 1550
1430
Specific Heat Capacity, J/kg-K 400
470
Thermal Conductivity, W/m-K 15
41
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
8.6

Otherwise Unclassified Properties

Density, g/cm3 9.6
7.8
Embodied Carbon, kg CO2/kg material 9.8
2.2
Embodied Energy, MJ/kg 140
30
Embodied Water, L/kg 450
57

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 310
73 to 100
Resilience: Unit (Modulus of Resilience), kJ/m3 340
1680 to 2970
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 21
24
Strength to Weight: Axial, points 28
33 to 38
Strength to Weight: Bending, points 23
27 to 30
Thermal Diffusivity, mm2/s 3.9
11
Thermal Shock Resistance, points 25
27 to 31

Alloy Composition

Carbon (C), % 0.050 to 0.15
0.12 to 0.18
Chromium (Cr), % 19 to 21
1.3 to 1.8
Cobalt (Co), % 46.4 to 58
0
Iron (Fe), % 0 to 3.0
95.1 to 97
Manganese (Mn), % 0 to 2.0
0.6 to 1.0
Molybdenum (Mo), % 0
0.8 to 1.0
Nickel (Ni), % 9.0 to 11
0
Phosphorus (P), % 0 to 0.020
0 to 0.025
Silicon (Si), % 0 to 0.4
0 to 0.6
Sulfur (S), % 0 to 0.015
0 to 0.030
Tungsten (W), % 14 to 16
0
Vanadium (V), % 0
0.15 to 0.25