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R30605 Cobalt vs. Monel R-405

R30605 cobalt belongs to the cobalt alloys classification, while Monel R-405 belongs to the nickel alloys. There are 25 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 R30605 cobalt and the bottom bar is Monel R-405.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
160
Elongation at Break, % 34
9.1 to 39
Fatigue Strength, MPa 260 to 590
210 to 250
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 81
62
Tensile Strength: Ultimate (UTS), MPa 1130 to 1900
540 to 630
Tensile Strength: Yield (Proof), MPa 470 to 1600
190 to 350

Thermal Properties

Latent Heat of Fusion, J/g 290
270
Melting Completion (Liquidus), °C 1410
1350
Melting Onset (Solidus), °C 1330
1300
Specific Heat Capacity, J/kg-K 410
430
Thermal Conductivity, W/m-K 9.6
23
Thermal Expansion, µm/m-K 12
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
3.4
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
3.4

Otherwise Unclassified Properties

Density, g/cm3 9.6
8.9
Embodied Carbon, kg CO2/kg material 9.8
7.9
Embodied Energy, MJ/kg 140
110
Embodied Water, L/kg 450
250

Common Calculations

Stiffness to Weight: Axial, points 12
10
Stiffness to Weight: Bending, points 21
21
Strength to Weight: Axial, points 33 to 55
17 to 20
Strength to Weight: Bending, points 25 to 36
17 to 18
Thermal Diffusivity, mm2/s 2.5
5.9
Thermal Shock Resistance, points 31 to 52
17 to 20

Alloy Composition

Carbon (C), % 0.050 to 0.15
0 to 0.3
Chromium (Cr), % 19 to 21
0
Cobalt (Co), % 46.4 to 57
0
Copper (Cu), % 0
28 to 34
Iron (Fe), % 0 to 3.0
0 to 2.5
Manganese (Mn), % 1.0 to 2.0
0 to 2.0
Nickel (Ni), % 9.0 to 11
63 to 72
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 0.4
0 to 0.5
Sulfur (S), % 0 to 0.030
0.025 to 0.060
Tungsten (W), % 14 to 16
0

Comparable Variants