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R31233 Cobalt vs. EN 1.4006 Stainless Steel

R31233 cobalt belongs to the cobalt alloys classification, while EN 1.4006 stainless 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 1.4006 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
190
Elongation at Break, % 17
16 to 23
Fatigue Strength, MPa 220
150 to 300
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 85
76
Tensile Strength: Ultimate (UTS), MPa 1020
590 to 750
Tensile Strength: Yield (Proof), MPa 420
230 to 510

Thermal Properties

Latent Heat of Fusion, J/g 320
270
Melting Completion (Liquidus), °C 1350
1440
Melting Onset (Solidus), °C 1330
1400
Specific Heat Capacity, J/kg-K 440
480
Thermal Conductivity, W/m-K 12
30
Thermal Expansion, µm/m-K 13
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
3.3

Otherwise Unclassified Properties

Density, g/cm3 8.6
7.7
Embodied Carbon, kg CO2/kg material 8.4
1.9
Embodied Energy, MJ/kg 110
27
Embodied Water, L/kg 480
100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
99 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 410
140 to 660
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 33
21 to 27
Strength to Weight: Bending, points 26
20 to 24
Thermal Diffusivity, mm2/s 3.2
8.1
Thermal Shock Resistance, points 25
21 to 26

Alloy Composition

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
11.5 to 13.5
Cobalt (Co), % 44.7 to 63.3
0
Iron (Fe), % 1.0 to 5.0
83.1 to 88.4
Manganese (Mn), % 0.1 to 1.5
0 to 1.5
Molybdenum (Mo), % 4.0 to 6.0
0
Nickel (Ni), % 7.0 to 11
0 to 0.75
Nitrogen (N), % 0.030 to 0.12
0
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0.050 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.020
0 to 0.015
Tungsten (W), % 1.0 to 3.0
0