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R31233 Cobalt vs. EN 1.7767 Steel

R31233 cobalt belongs to the cobalt alloys classification, while EN 1.7767 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 1.7767 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
190
Elongation at Break, % 17
20
Fatigue Strength, MPa 220
320 to 340
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 85
74
Tensile Strength: Ultimate (UTS), MPa 1020
670 to 690
Tensile Strength: Yield (Proof), MPa 420
460 to 500

Thermal Properties

Latent Heat of Fusion, J/g 320
250
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
40
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
8.9

Otherwise Unclassified Properties

Density, g/cm3 8.6
7.9
Embodied Carbon, kg CO2/kg material 8.4
2.4
Embodied Energy, MJ/kg 110
33
Embodied Water, L/kg 480
64

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
120 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 410
570 to 650
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 33
24
Strength to Weight: Bending, points 26
22
Thermal Diffusivity, mm2/s 3.2
11
Thermal Shock Resistance, points 25
19 to 20

Alloy Composition

Boron (B), % 0 to 0.015
0
Carbon (C), % 0.020 to 0.1
0.1 to 0.15
Chromium (Cr), % 23.5 to 27.5
2.8 to 3.3
Cobalt (Co), % 44.7 to 63.3
0
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 1.0 to 5.0
93.8 to 95.8
Manganese (Mn), % 0.1 to 1.5
0.3 to 0.6
Molybdenum (Mo), % 4.0 to 6.0
0.9 to 1.1
Nickel (Ni), % 7.0 to 11
0 to 0.25
Niobium (Nb), % 0
0 to 0.070
Nitrogen (N), % 0.030 to 0.12
0 to 0.012
Phosphorus (P), % 0 to 0.030
0 to 0.015
Silicon (Si), % 0.050 to 1.0
0 to 0.15
Sulfur (S), % 0 to 0.020
0 to 0.0050
Titanium (Ti), % 0
0 to 0.030
Tungsten (W), % 1.0 to 3.0
0
Vanadium (V), % 0
0.2 to 0.3