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K93050 Alloy vs. R31539 Cobalt

K93050 alloy belongs to the iron alloys classification, while R31539 cobalt belongs to the cobalt 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 K93050 alloy and the bottom bar is R31539 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
220
Poisson's Ratio 0.3
0.29
Shear Modulus, GPa 72
86
Tensile Strength: Ultimate (UTS), MPa 500 to 680
1000 to 1340

Thermal Properties

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

Otherwise Unclassified Properties

Density, g/cm3 8.2
8.4
Embodied Carbon, kg CO2/kg material 4.7
8.2
Embodied Energy, MJ/kg 65
110
Embodied Water, L/kg 120
530

Common Calculations

Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 17 to 23
33 to 44
Strength to Weight: Bending, points 17 to 21
27 to 32
Thermal Shock Resistance, points 16 to 21
24 to 32

Alloy Composition

Aluminum (Al), % 0
0.3 to 1.0
Carbon (C), % 0 to 0.15
0 to 0.14
Chromium (Cr), % 0 to 0.25
26 to 30
Cobalt (Co), % 0 to 0.5
57.7 to 68.7
Iron (Fe), % 61.4 to 63.9
0 to 0.75
Lanthanum (La), % 0
0.030 to 0.2
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 0
5.0 to 7.0
Nickel (Ni), % 36
0 to 1.0
Nitrogen (N), % 0
0 to 0.25
Phosphorus (P), % 0 to 0.020
0
Selenium (Se), % 0.15 to 0.3
0
Silicon (Si), % 0 to 0.35
0 to 1.0
Sulfur (S), % 0 to 0.020
0

Comparable Variants