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EN 2.4964 Cobalt vs. EN 1.7380 Steel

EN 2.4964 cobalt belongs to the cobalt alloys classification, while EN 1.7380 steel belongs to the iron alloys. There are 27 material properties with values for both materials. Properties with values for just one material (6, 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 1.7380 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
190
Elongation at Break, % 40
19 to 20
Fatigue Strength, MPa 220
200 to 230
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 86
74
Tensile Strength: Ultimate (UTS), MPa 960
540 to 550
Tensile Strength: Yield (Proof), MPa 390
290 to 330

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
39
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
8.7

Otherwise Unclassified Properties

Density, g/cm3 9.6
7.9
Embodied Carbon, kg CO2/kg material 9.8
1.8
Embodied Energy, MJ/kg 140
23
Embodied Water, L/kg 450
59

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 310
87 to 98
Resilience: Unit (Modulus of Resilience), kJ/m3 340
230 to 280
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 21
24
Strength to Weight: Axial, points 28
19 to 20
Strength to Weight: Bending, points 23
19
Thermal Diffusivity, mm2/s 3.9
11
Thermal Shock Resistance, points 25
15 to 16

Alloy Composition

Carbon (C), % 0.050 to 0.15
0.080 to 0.14
Chromium (Cr), % 19 to 21
2.0 to 2.5
Cobalt (Co), % 46.4 to 58
0
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 0 to 3.0
94.6 to 96.6
Manganese (Mn), % 0 to 2.0
0.4 to 0.8
Molybdenum (Mo), % 0
0.9 to 1.1
Nickel (Ni), % 9.0 to 11
0
Nitrogen (N), % 0
0 to 0.012
Phosphorus (P), % 0 to 0.020
0 to 0.020
Silicon (Si), % 0 to 0.4
0 to 0.5
Sulfur (S), % 0 to 0.015
0 to 0.010
Tungsten (W), % 14 to 16
0