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R30003 Cobalt vs. EN 1.3539 Steel

R30003 cobalt belongs to the cobalt alloys classification, while EN 1.3539 steel belongs to the iron alloys. There are 23 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is R30003 cobalt and the bottom bar is EN 1.3539 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 83
73
Tensile Strength: Ultimate (UTS), MPa 970 to 1720
670

Thermal Properties

Latent Heat of Fusion, J/g 310
260
Melting Completion (Liquidus), °C 1400
1450
Melting Onset (Solidus), °C 1440
1410
Specific Heat Capacity, J/kg-K 450
470
Thermal Conductivity, W/m-K 13
39
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 95
3.2
Density, g/cm3 8.4
7.8
Embodied Carbon, kg CO2/kg material 8.0
1.7
Embodied Energy, MJ/kg 110
22
Embodied Water, L/kg 400
57

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 32 to 57
24
Strength to Weight: Bending, points 26 to 38
22
Thermal Diffusivity, mm2/s 3.3
11
Thermal Shock Resistance, points 26 to 45
20

Alloy Composition

Aluminum (Al), % 0
0 to 0.050
Boron (B), % 0 to 0.1
0
Carbon (C), % 0 to 0.15
0.93 to 1.1
Chromium (Cr), % 19 to 21
1.8 to 2.1
Cobalt (Co), % 39 to 41
0
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 10 to 20.5
95.2 to 96.5
Manganese (Mn), % 1.5 to 2.5
0.8 to 1.1
Molybdenum (Mo), % 6.0 to 8.0
0.5 to 0.6
Nickel (Ni), % 14 to 16
0
Oxygen (O), % 0
0 to 0.0015
Phosphorus (P), % 0 to 0.015
0 to 0.025
Silicon (Si), % 0 to 1.2
0.4 to 0.6
Sulfur (S), % 0 to 0.015
0 to 0.030