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R31538 Cobalt vs. Monel 400

R31538 cobalt belongs to the cobalt alloys classification, while Monel 400 belongs to the nickel 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 R31538 cobalt and the bottom bar is Monel 400.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
160
Elongation at Break, % 13 to 23
20 to 40
Fatigue Strength, MPa 310 to 480
230 to 290
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 86
62
Tensile Strength: Ultimate (UTS), MPa 1020 to 1360
540 to 780
Tensile Strength: Yield (Proof), MPa 580 to 930
210 to 590

Thermal Properties

Latent Heat of Fusion, J/g 320
270
Melting Completion (Liquidus), °C 1360
1350
Melting Onset (Solidus), °C 1290
1300
Specific Heat Capacity, J/kg-K 450
430
Thermal Conductivity, W/m-K 13
23
Thermal Expansion, µm/m-K 13
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
3.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
3.4

Otherwise Unclassified Properties

Density, g/cm3 8.4
8.9
Embodied Carbon, kg CO2/kg material 8.1
7.9
Embodied Energy, MJ/kg 110
110
Embodied Water, L/kg 530
250

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 200
140 to 180
Resilience: Unit (Modulus of Resilience), kJ/m3 750 to 1920
140 to 1080
Stiffness to Weight: Axial, points 15
10
Stiffness to Weight: Bending, points 24
21
Strength to Weight: Axial, points 34 to 45
17 to 25
Strength to Weight: Bending, points 27 to 32
17 to 21
Thermal Diffusivity, mm2/s 3.5
6.1
Thermal Shock Resistance, points 25 to 33
17 to 25

Alloy Composition

Carbon (C), % 0.15 to 0.35
0 to 0.3
Chromium (Cr), % 26 to 30
0
Cobalt (Co), % 58.7 to 68.9
0
Copper (Cu), % 0
28 to 34
Iron (Fe), % 0 to 0.75
0 to 2.5
Manganese (Mn), % 0 to 1.0
0 to 2.0
Molybdenum (Mo), % 5.0 to 7.0
0
Nickel (Ni), % 0 to 1.0
63 to 72
Nitrogen (N), % 0 to 0.25
0
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0
0 to 0.024

Comparable Variants