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R30021 Cobalt vs. EN 1.3963 Alloy

R30021 cobalt belongs to the cobalt alloys classification, while EN 1.3963 alloy belongs to the iron alloys. There are 22 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is R30021 cobalt and the bottom bar is EN 1.3963 alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
190
Elongation at Break, % 9.0
29
Poisson's Ratio 0.29
0.3
Shear Modulus, GPa 86
72
Tensile Strength: Ultimate (UTS), MPa 700
440
Tensile Strength: Yield (Proof), MPa 500
310

Thermal Properties

Latent Heat of Fusion, J/g 330
270
Melting Completion (Liquidus), °C 1350
1430
Melting Onset (Solidus), °C 1190
1390
Specific Heat Capacity, J/kg-K 450
460
Thermal Expansion, µm/m-K 11
1.6

Otherwise Unclassified Properties

Density, g/cm3 8.4
8.2
Embodied Carbon, kg CO2/kg material 8.0
4.8
Embodied Energy, MJ/kg 110
66
Embodied Water, L/kg 520
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 57
110
Resilience: Unit (Modulus of Resilience), kJ/m3 570
260
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 23
15
Strength to Weight: Bending, points 21
16
Thermal Shock Resistance, points 21
110

Alloy Composition

Carbon (C), % 0.2 to 0.35
0 to 0.050
Chromium (Cr), % 26 to 29
0 to 0.25
Cobalt (Co), % 61.7 to 67.3
0
Iron (Fe), % 0 to 3.0
60.5 to 64.9
Manganese (Mn), % 0
0 to 0.5
Molybdenum (Mo), % 4.5 to 6.0
0 to 1.0
Nickel (Ni), % 2.0 to 3.0
35 to 37
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 1.5
0 to 0.5
Sulfur (S), % 0
0.1 to 0.2