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K93500 Alloy vs. R30816 Cobalt

K93500 alloy belongs to the iron alloys classification, while R30816 cobalt belongs to the cobalt alloys. They have a modest 28% of their average alloy composition in common, which, by itself, doesn't mean much. There are 18 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is K93500 alloy and the bottom bar is R30816 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
210
Poisson's Ratio 0.3
0.3
Shear Modulus, GPa 72
81
Tensile Strength: Ultimate (UTS), MPa 490 to 810
1020

Thermal Properties

Latent Heat of Fusion, J/g 270
300
Melting Completion (Liquidus), °C 1430
1540
Melting Onset (Solidus), °C 1380
1460
Specific Heat Capacity, J/kg-K 460
420
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Density, g/cm3 8.2
9.1
Embodied Carbon, kg CO2/kg material 4.7
20
Embodied Energy, MJ/kg 65
320
Embodied Water, L/kg 130
440

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
22
Strength to Weight: Axial, points 17 to 27
31
Strength to Weight: Bending, points 17 to 23
25
Thermal Shock Resistance, points 15 to 25
28

Alloy Composition

Aluminum (Al), % 0 to 0.1
0
Carbon (C), % 0 to 0.050
0.32 to 0.42
Chromium (Cr), % 0 to 0.25
19 to 21
Cobalt (Co), % 5.0
40 to 49.8
Iron (Fe), % 61.4 to 63
0 to 5.0
Magnesium (Mg), % 0 to 0.1
0
Manganese (Mn), % 0 to 0.6
1.0 to 2.0
Molybdenum (Mo), % 0
3.5 to 4.5
Nickel (Ni), % 32
19 to 21
Niobium (Nb), % 0
3.5 to 4.5
Phosphorus (P), % 0 to 0.015
0 to 0.040
Silicon (Si), % 0 to 0.25
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.030
Tantalum (Ta), % 0
3.5 to 4.5
Titanium (Ti), % 0 to 0.1
0
Tungsten (W), % 0
3.5 to 4.5
Zirconium (Zr), % 0 to 0.1
0