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R30155 Cobalt vs. EN 1.5514 Steel

Both R30155 cobalt and EN 1.5514 steel are iron alloys. They have a modest 31% of their average alloy composition in common, which, by itself, doesn't mean much. There are 24 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is R30155 cobalt and the bottom bar is EN 1.5514 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220
140 to 170
Elastic (Young's, Tensile) Modulus, GPa 210
190
Poisson's Ratio 0.29
0.29
Reduction in Area, % 34
64 to 69
Shear Modulus, GPa 81
73
Tensile Strength: Ultimate (UTS), MPa 850
470 to 1680

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Maximum Temperature: Mechanical, °C 1100
400
Melting Completion (Liquidus), °C 1470
1460
Melting Onset (Solidus), °C 1420
1420
Specific Heat Capacity, J/kg-K 450
470
Thermal Conductivity, W/m-K 12
49
Thermal Expansion, µm/m-K 14
13

Otherwise Unclassified Properties

Base Metal Price, % relative 80
1.9
Density, g/cm3 8.5
7.8
Embodied Carbon, kg CO2/kg material 9.7
1.4
Embodied Energy, MJ/kg 150
19
Embodied Water, L/kg 300
47

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 28
17 to 60
Strength to Weight: Bending, points 24
17 to 40
Thermal Diffusivity, mm2/s 3.2
13
Thermal Shock Resistance, points 21
14 to 50

Alloy Composition

Boron (B), % 0
0.00080 to 0.0050
Carbon (C), % 0.080 to 0.16
0.3 to 0.35
Chromium (Cr), % 20 to 22.5
0 to 0.3
Cobalt (Co), % 18.5 to 21
0
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 24.3 to 36.2
97.8 to 99.099
Manganese (Mn), % 1.0 to 2.0
0.6 to 0.9
Molybdenum (Mo), % 2.5 to 3.5
0
Nickel (Ni), % 19 to 21
0
Niobium (Nb), % 0.75 to 1.3
0
Nitrogen (N), % 0 to 0.2
0
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 1.0
0 to 0.3
Sulfur (S), % 0 to 0.030
0 to 0.025
Tantalum (Ta), % 0.75 to 1.3
0
Tungsten (W), % 2.0 to 3.0
0