MakeItFrom.com
Menu (ESC)

R30155 Cobalt vs. R30016 Cobalt

R30155 cobalt belongs to the iron alloys classification, while R30016 cobalt belongs to the cobalt alloys. They have 49% of their average alloy composition in common. There are 26 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 R30155 cobalt and the bottom bar is R30016 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
220
Elongation at Break, % 34
8.4
Fatigue Strength, MPa 310
290
Poisson's Ratio 0.29
0.28
Reduction in Area, % 34
8.0
Shear Modulus, GPa 81
85
Tensile Strength: Ultimate (UTS), MPa 850
1010
Tensile Strength: Yield (Proof), MPa 390
580

Thermal Properties

Latent Heat of Fusion, J/g 300
320
Melting Completion (Liquidus), °C 1470
1360
Melting Onset (Solidus), °C 1420
1270
Specific Heat Capacity, J/kg-K 450
450
Thermal Conductivity, W/m-K 12
15
Thermal Expansion, µm/m-K 14
14

Otherwise Unclassified Properties

Density, g/cm3 8.5
8.5
Embodied Carbon, kg CO2/kg material 9.7
7.7
Embodied Energy, MJ/kg 150
110
Embodied Water, L/kg 300
500

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 230
72
Resilience: Unit (Modulus of Resilience), kJ/m3 370
770
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 28
33
Strength to Weight: Bending, points 24
26
Thermal Diffusivity, mm2/s 3.2
3.9
Thermal Shock Resistance, points 21
24

Alloy Composition

Carbon (C), % 0.080 to 0.16
0.9 to 1.4
Chromium (Cr), % 20 to 22.5
28 to 32
Cobalt (Co), % 18.5 to 21
49.6 to 66.9
Iron (Fe), % 24.3 to 36.2
0 to 3.0
Manganese (Mn), % 1.0 to 2.0
0.5 to 2.0
Molybdenum (Mo), % 2.5 to 3.5
0 to 1.5
Nickel (Ni), % 19 to 21
0 to 3.0
Niobium (Nb), % 0.75 to 1.3
0
Nitrogen (N), % 0 to 0.2
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0.2 to 2.0
Sulfur (S), % 0 to 0.030
0
Tantalum (Ta), % 0.75 to 1.3
0
Tungsten (W), % 2.0 to 3.0
3.5 to 5.5