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R30001 Cobalt vs. EN 1.4806 Stainless Steel

R30001 cobalt belongs to the cobalt alloys classification, while EN 1.4806 stainless steel belongs to the iron alloys. They have a modest 22% of their average alloy composition in common, which, by itself, doesn't mean much. There are 23 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is R30001 cobalt and the bottom bar is EN 1.4806 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
190
Elongation at Break, % 1.0
6.8
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 86
75
Tensile Strength: Ultimate (UTS), MPa 620
470

Thermal Properties

Latent Heat of Fusion, J/g 310
320
Melting Completion (Liquidus), °C 1530
1380
Melting Onset (Solidus), °C 1260
1340
Specific Heat Capacity, J/kg-K 430
480
Thermal Conductivity, W/m-K 15
12
Thermal Expansion, µm/m-K 11
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.8
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
1.9

Otherwise Unclassified Properties

Density, g/cm3 9.0
8.0
Embodied Carbon, kg CO2/kg material 8.9
5.4
Embodied Energy, MJ/kg 130
76
Embodied Water, L/kg 460
190

Common Calculations

Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 22
24
Strength to Weight: Axial, points 19
16
Strength to Weight: Bending, points 18
17
Thermal Diffusivity, mm2/s 3.7
3.1
Thermal Shock Resistance, points 19
11

Alloy Composition

Carbon (C), % 2.0 to 3.0
0.3 to 0.5
Chromium (Cr), % 28 to 32
16 to 18
Cobalt (Co), % 43 to 59
0
Iron (Fe), % 0 to 3.0
40.4 to 48.7
Manganese (Mn), % 0
0 to 2.0
Molybdenum (Mo), % 0 to 1.0
0 to 0.5
Nickel (Ni), % 0 to 3.0
34 to 36
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 2.0
1.0 to 2.5
Sulfur (S), % 0
0 to 0.030
Tungsten (W), % 11 to 13
0