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Monel 400 vs. R30012 Cobalt

Monel 400 belongs to the nickel alloys classification, while R30012 cobalt belongs to the cobalt 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 Monel 400 and the bottom bar is R30012 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 160
220
Elongation at Break, % 20 to 40
1.0
Fatigue Strength, MPa 230 to 290
320
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 62
86
Tensile Strength: Ultimate (UTS), MPa 540 to 780
830
Tensile Strength: Yield (Proof), MPa 210 to 590
650

Thermal Properties

Latent Heat of Fusion, J/g 270
320
Melting Completion (Liquidus), °C 1350
1470
Melting Onset (Solidus), °C 1300
1280
Specific Heat Capacity, J/kg-K 430
440
Thermal Conductivity, W/m-K 23
15
Thermal Expansion, µm/m-K 14
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.3
1.8
Electrical Conductivity: Equal Weight (Specific), % IACS 3.4
1.8

Otherwise Unclassified Properties

Density, g/cm3 8.9
8.8
Embodied Carbon, kg CO2/kg material 7.9
8.3
Embodied Energy, MJ/kg 110
120
Embodied Water, L/kg 250
480

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 180
7.7
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 1080
960
Stiffness to Weight: Axial, points 10
14
Stiffness to Weight: Bending, points 21
23
Strength to Weight: Axial, points 17 to 25
26
Strength to Weight: Bending, points 17 to 21
22
Thermal Diffusivity, mm2/s 6.1
3.8
Thermal Shock Resistance, points 17 to 25
23

Alloy Composition

Carbon (C), % 0 to 0.3
1.4 to 2.0
Chromium (Cr), % 0
27 to 32
Cobalt (Co), % 0
47.5 to 64.1
Copper (Cu), % 28 to 34
0
Iron (Fe), % 0 to 2.5
0 to 3.0
Manganese (Mn), % 0 to 2.0
0
Molybdenum (Mo), % 0
0 to 1.0
Nickel (Ni), % 63 to 72
0 to 3.0
Silicon (Si), % 0 to 0.5
0 to 2.0
Sulfur (S), % 0 to 0.024
0
Tungsten (W), % 0
7.5 to 9.5