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R30012 Cobalt vs. EN 1.0477 Steel

R30012 cobalt belongs to the cobalt alloys classification, while EN 1.0477 steel belongs to the iron alloys. There are 27 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is R30012 cobalt and the bottom bar is EN 1.0477 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
190
Elongation at Break, % 1.0
24
Fatigue Strength, MPa 320
170
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 86
73
Tensile Strength: Ultimate (UTS), MPa 830
440
Tensile Strength: Yield (Proof), MPa 650
230

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
49
Thermal Expansion, µm/m-K 12
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.8
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
8.3

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
20
Embodied Water, L/kg 480
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.7
90
Resilience: Unit (Modulus of Resilience), kJ/m3 960
150
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 26
16
Strength to Weight: Bending, points 22
16
Thermal Diffusivity, mm2/s 3.8
13
Thermal Shock Resistance, points 23
14

Alloy Composition

Aluminum (Al), % 0
0 to 0.060
Carbon (C), % 1.4 to 2.0
0 to 0.18
Chromium (Cr), % 27 to 32
0 to 0.3
Cobalt (Co), % 47.5 to 64.1
0
Copper (Cu), % 0
0 to 0.2
Iron (Fe), % 0 to 3.0
96.9 to 99.4
Manganese (Mn), % 0
0.6 to 1.4
Molybdenum (Mo), % 0 to 1.0
0 to 0.080
Nickel (Ni), % 0 to 3.0
0 to 0.3
Niobium (Nb), % 0
0 to 0.030
Nitrogen (N), % 0
0 to 0.020
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0 to 2.0
0 to 0.4
Sulfur (S), % 0
0 to 0.015
Tungsten (W), % 7.5 to 9.5
0
Vanadium (V), % 0
0 to 0.050