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R30012 Cobalt vs. EN 1.3521 Steel

R30012 cobalt belongs to the cobalt alloys classification, while EN 1.3521 steel belongs to the iron alloys. There are 22 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 R30012 cobalt and the bottom bar is EN 1.3521 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 830
490 to 1390

Thermal Properties

Latent Heat of Fusion, J/g 320
250
Melting Completion (Liquidus), °C 1470
1460
Melting Onset (Solidus), °C 1280
1420
Specific Heat Capacity, J/kg-K 440
470
Thermal Conductivity, W/m-K 15
45
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.8
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
8.4

Otherwise Unclassified Properties

Density, g/cm3 8.8
7.8
Embodied Carbon, kg CO2/kg material 8.3
1.5
Embodied Energy, MJ/kg 120
19
Embodied Water, L/kg 480
52

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 26
17 to 49
Strength to Weight: Bending, points 22
18 to 35
Thermal Diffusivity, mm2/s 3.8
12
Thermal Shock Resistance, points 23
14 to 41

Alloy Composition

Aluminum (Al), % 0
0 to 0.050
Carbon (C), % 1.4 to 2.0
0.14 to 0.19
Chromium (Cr), % 27 to 32
0.8 to 1.1
Cobalt (Co), % 47.5 to 64.1
0
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 0 to 3.0
96.8 to 98.2
Manganese (Mn), % 0
1.0 to 1.3
Molybdenum (Mo), % 0 to 1.0
0
Nickel (Ni), % 0 to 3.0
0
Oxygen (O), % 0
0 to 0.0020
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0 to 2.0
0 to 0.4
Sulfur (S), % 0
0 to 0.030
Tungsten (W), % 7.5 to 9.5
0