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R30001 Cobalt vs. EN 1.3537 Steel

R30001 cobalt belongs to the cobalt alloys classification, while EN 1.3537 steel belongs to the iron alloys. There are 22 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 R30001 cobalt and the bottom bar is EN 1.3537 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
190
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 86
73
Tensile Strength: Ultimate (UTS), MPa 620
620 to 730

Thermal Properties

Latent Heat of Fusion, J/g 310
250
Melting Completion (Liquidus), °C 1530
1450
Melting Onset (Solidus), °C 1260
1410
Specific Heat Capacity, J/kg-K 430
470
Thermal Conductivity, W/m-K 15
43
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.8
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
8.5

Otherwise Unclassified Properties

Density, g/cm3 9.0
7.8
Embodied Carbon, kg CO2/kg material 8.9
1.5
Embodied Energy, MJ/kg 130
21
Embodied Water, L/kg 460
54

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 22
24
Strength to Weight: Axial, points 19
22 to 26
Strength to Weight: Bending, points 18
21 to 23
Thermal Diffusivity, mm2/s 3.7
12
Thermal Shock Resistance, points 19
18 to 22

Alloy Composition

Aluminum (Al), % 0
0 to 0.050
Carbon (C), % 2.0 to 3.0
0.93 to 1.1
Chromium (Cr), % 28 to 32
1.7 to 2.0
Cobalt (Co), % 43 to 59
0
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 0 to 3.0
96.4 to 97.8
Manganese (Mn), % 0
0.25 to 0.45
Molybdenum (Mo), % 0 to 1.0
0.15 to 0.3
Nickel (Ni), % 0 to 3.0
0
Oxygen (O), % 0
0 to 0.0015
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0 to 2.0
0.15 to 0.45
Sulfur (S), % 0
0 to 0.030
Tungsten (W), % 11 to 13
0