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R30605 Cobalt vs. EN 1.3961 Alloy

R30605 cobalt belongs to the cobalt alloys classification, while EN 1.3961 alloy belongs to the iron alloys. There are 20 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 R30605 cobalt and the bottom bar is EN 1.3961 alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 34
31
Poisson's Ratio 0.29
0.3
Shear Modulus, GPa 81
72
Tensile Strength: Ultimate (UTS), MPa 1130 to 1900
450
Tensile Strength: Yield (Proof), MPa 470 to 1600
310

Thermal Properties

Latent Heat of Fusion, J/g 290
270
Melting Completion (Liquidus), °C 1410
1430
Melting Onset (Solidus), °C 1330
1390
Specific Heat Capacity, J/kg-K 410
460
Thermal Expansion, µm/m-K 12
1.3

Otherwise Unclassified Properties

Density, g/cm3 9.6
8.2
Embodied Carbon, kg CO2/kg material 9.8
4.8
Embodied Energy, MJ/kg 140
66
Embodied Water, L/kg 450
110

Common Calculations

Stiffness to Weight: Axial, points 12
13
Stiffness to Weight: Bending, points 21
23
Strength to Weight: Axial, points 33 to 55
15
Strength to Weight: Bending, points 25 to 36
16
Thermal Shock Resistance, points 31 to 52
130

Alloy Composition

Carbon (C), % 0.050 to 0.15
0 to 0.050
Chromium (Cr), % 19 to 21
0 to 0.25
Cobalt (Co), % 46.4 to 57
0
Iron (Fe), % 0 to 3.0
60.7 to 65
Manganese (Mn), % 1.0 to 2.0
0 to 0.5
Molybdenum (Mo), % 0
0 to 1.0
Nickel (Ni), % 9.0 to 11
35 to 37
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 0.4
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.020
Tungsten (W), % 14 to 16
0