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R31233 Cobalt vs. EN 1.7383 Steel

R31233 cobalt belongs to the cobalt alloys classification, while EN 1.7383 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 R31233 cobalt and the bottom bar is EN 1.7383 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
190
Elongation at Break, % 17
20 to 23
Fatigue Strength, MPa 220
210 to 270
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 85
74
Tensile Strength: Ultimate (UTS), MPa 1020
560 to 610
Tensile Strength: Yield (Proof), MPa 420
300 to 400

Thermal Properties

Latent Heat of Fusion, J/g 320
260
Melting Completion (Liquidus), °C 1350
1470
Melting Onset (Solidus), °C 1330
1430
Specific Heat Capacity, J/kg-K 440
470
Thermal Conductivity, W/m-K 12
39
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
7.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
8.8

Otherwise Unclassified Properties

Density, g/cm3 8.6
7.9
Embodied Carbon, kg CO2/kg material 8.4
1.8
Embodied Energy, MJ/kg 110
23
Embodied Water, L/kg 480
59

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
110
Resilience: Unit (Modulus of Resilience), kJ/m3 410
240 to 420
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 33
20 to 22
Strength to Weight: Bending, points 26
19 to 20
Thermal Diffusivity, mm2/s 3.2
11
Thermal Shock Resistance, points 25
16 to 18

Alloy Composition

Aluminum (Al), % 0
0 to 0.040
Boron (B), % 0 to 0.015
0
Carbon (C), % 0.020 to 0.1
0.080 to 0.15
Chromium (Cr), % 23.5 to 27.5
2.0 to 2.5
Cobalt (Co), % 44.7 to 63.3
0
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 1.0 to 5.0
94.3 to 96.6
Manganese (Mn), % 0.1 to 1.5
0.4 to 0.8
Molybdenum (Mo), % 4.0 to 6.0
0.9 to 1.1
Nickel (Ni), % 7.0 to 11
0 to 0.3
Nitrogen (N), % 0.030 to 0.12
0
Phosphorus (P), % 0 to 0.030
0 to 0.025
Silicon (Si), % 0.050 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.020
0 to 0.010
Tungsten (W), % 1.0 to 3.0
0