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R31233 Cobalt vs. EN 1.0213 Steel

R31233 cobalt belongs to the cobalt alloys classification, while EN 1.0213 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 R31233 cobalt and the bottom bar is EN 1.0213 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
190
Elongation at Break, % 17
12 to 25
Fatigue Strength, MPa 220
160 to 240
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 85
73
Tensile Strength: Ultimate (UTS), MPa 1020
320 to 430
Tensile Strength: Yield (Proof), MPa 420
220 to 330

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
53
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
6.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
7.9

Otherwise Unclassified Properties

Density, g/cm3 8.6
7.9
Embodied Carbon, kg CO2/kg material 8.4
1.4
Embodied Energy, MJ/kg 110
18
Embodied Water, L/kg 480
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
33 to 98
Resilience: Unit (Modulus of Resilience), kJ/m3 410
120 to 300
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 33
11 to 15
Strength to Weight: Bending, points 26
13 to 16
Thermal Diffusivity, mm2/s 3.2
14
Thermal Shock Resistance, points 25
10 to 14

Alloy Composition

Aluminum (Al), % 0
0.020 to 0.060
Boron (B), % 0 to 0.015
0
Carbon (C), % 0.020 to 0.1
0.060 to 0.1
Chromium (Cr), % 23.5 to 27.5
0
Cobalt (Co), % 44.7 to 63.3
0
Iron (Fe), % 1.0 to 5.0
99.245 to 99.67
Manganese (Mn), % 0.1 to 1.5
0.25 to 0.45
Molybdenum (Mo), % 4.0 to 6.0
0
Nickel (Ni), % 7.0 to 11
0
Nitrogen (N), % 0.030 to 0.12
0
Phosphorus (P), % 0 to 0.030
0 to 0.020
Silicon (Si), % 0.050 to 1.0
0 to 0.1
Sulfur (S), % 0 to 0.020
0 to 0.025
Tungsten (W), % 1.0 to 3.0
0