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R30012 Cobalt vs. K93050 Alloy

R30012 cobalt belongs to the cobalt alloys classification, while K93050 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 R30012 cobalt and the bottom bar is K93050 alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
190
Poisson's Ratio 0.28
0.3
Shear Modulus, GPa 86
72
Tensile Strength: Ultimate (UTS), MPa 830
500 to 680

Thermal Properties

Latent Heat of Fusion, J/g 320
270
Melting Completion (Liquidus), °C 1470
1430
Melting Onset (Solidus), °C 1280
1380
Specific Heat Capacity, J/kg-K 440
460
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Density, g/cm3 8.8
8.2
Embodied Carbon, kg CO2/kg material 8.3
4.7
Embodied Energy, MJ/kg 120
65
Embodied Water, L/kg 480
120

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 23
23
Strength to Weight: Axial, points 26
17 to 23
Strength to Weight: Bending, points 22
17 to 21
Thermal Shock Resistance, points 23
16 to 21

Alloy Composition

Carbon (C), % 1.4 to 2.0
0 to 0.15
Chromium (Cr), % 27 to 32
0 to 0.25
Cobalt (Co), % 47.5 to 64.1
0 to 0.5
Iron (Fe), % 0 to 3.0
61.4 to 63.9
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0 to 1.0
0
Nickel (Ni), % 0 to 3.0
36
Phosphorus (P), % 0
0 to 0.020
Selenium (Se), % 0
0.15 to 0.3
Silicon (Si), % 0 to 2.0
0 to 0.35
Sulfur (S), % 0
0 to 0.020
Tungsten (W), % 7.5 to 9.5
0