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R30012 Cobalt vs. EN 1.5503 Steel

R30012 cobalt belongs to the cobalt alloys classification, while EN 1.5503 steel belongs to the iron alloys. There are 27 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 R30012 cobalt and the bottom bar is EN 1.5503 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
190
Elongation at Break, % 1.0
12 to 17
Fatigue Strength, MPa 320
180 to 280
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 86
73
Tensile Strength: Ultimate (UTS), MPa 830
400 to 520
Tensile Strength: Yield (Proof), MPa 650
270 to 430

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
52
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.8
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
8.1

Otherwise Unclassified Properties

Density, g/cm3 8.8
7.8
Embodied Carbon, kg CO2/kg material 8.3
1.4
Embodied Energy, MJ/kg 120
18
Embodied Water, L/kg 480
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.7
41 to 81
Resilience: Unit (Modulus of Resilience), kJ/m3 960
200 to 490
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 26
14 to 19
Strength to Weight: Bending, points 22
15 to 18
Thermal Diffusivity, mm2/s 3.8
14
Thermal Shock Resistance, points 23
12 to 15

Alloy Composition

Boron (B), % 0
0.00080 to 0.0050
Carbon (C), % 1.4 to 2.0
0.16 to 0.2
Chromium (Cr), % 27 to 32
0
Cobalt (Co), % 47.5 to 64.1
0
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 0 to 3.0
98.4 to 99.239
Manganese (Mn), % 0
0.6 to 0.8
Molybdenum (Mo), % 0 to 1.0
0
Nickel (Ni), % 0 to 3.0
0
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0 to 2.0
0 to 0.3
Sulfur (S), % 0
0 to 0.025
Tungsten (W), % 7.5 to 9.5
0