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R31539 Cobalt vs. K93603 Alloy

R31539 cobalt belongs to the cobalt alloys classification, while K93603 alloy belongs to the iron alloys. There are 18 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is R31539 cobalt and the bottom bar is K93603 alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
190
Poisson's Ratio 0.29
0.3
Shear Modulus, GPa 86
72
Tensile Strength: Ultimate (UTS), MPa 1000 to 1340
490 to 810

Thermal Properties

Latent Heat of Fusion, J/g 320
270
Melting Completion (Liquidus), °C 1360
1430
Melting Onset (Solidus), °C 1290
1380
Specific Heat Capacity, J/kg-K 450
460
Thermal Expansion, µm/m-K 13
12

Otherwise Unclassified Properties

Density, g/cm3 8.4
8.2
Embodied Carbon, kg CO2/kg material 8.2
4.8
Embodied Energy, MJ/kg 110
66
Embodied Water, L/kg 530
120

Common Calculations

Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 33 to 44
17 to 27
Strength to Weight: Bending, points 27 to 32
17 to 24
Thermal Shock Resistance, points 24 to 32
15 to 25

Alloy Composition

Aluminum (Al), % 0.3 to 1.0
0 to 0.1
Carbon (C), % 0 to 0.14
0 to 0.050
Chromium (Cr), % 26 to 30
0 to 0.25
Cobalt (Co), % 57.7 to 68.7
0 to 0.5
Iron (Fe), % 0 to 0.75
61.8 to 64
Lanthanum (La), % 0.030 to 0.2
0
Magnesium (Mg), % 0
0 to 0.1
Manganese (Mn), % 0 to 1.0
0 to 0.6
Molybdenum (Mo), % 5.0 to 7.0
0
Nickel (Ni), % 0 to 1.0
36
Nitrogen (N), % 0 to 0.25
0
Phosphorus (P), % 0
0 to 0.015
Silicon (Si), % 0 to 1.0
0 to 0.4
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 0
0 to 0.1
Zirconium (Zr), % 0
0 to 0.1

Comparable Variants