MakeItFrom.com
Menu (ESC)

R30155 Cobalt vs. R30012 Cobalt

R30155 cobalt belongs to the iron alloys classification, while R30012 cobalt belongs to the cobalt alloys. They have 48% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is R30155 cobalt and the bottom bar is R30012 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
220
Elongation at Break, % 34
1.0
Fatigue Strength, MPa 310
320
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 81
86
Tensile Strength: Ultimate (UTS), MPa 850
830
Tensile Strength: Yield (Proof), MPa 390
650

Thermal Properties

Latent Heat of Fusion, J/g 300
320
Melting Completion (Liquidus), °C 1470
1470
Melting Onset (Solidus), °C 1420
1280
Specific Heat Capacity, J/kg-K 450
440
Thermal Conductivity, W/m-K 12
15
Thermal Expansion, µm/m-K 14
12

Otherwise Unclassified Properties

Density, g/cm3 8.5
8.8
Embodied Carbon, kg CO2/kg material 9.7
8.3
Embodied Energy, MJ/kg 150
120
Embodied Water, L/kg 300
480

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 230
7.7
Resilience: Unit (Modulus of Resilience), kJ/m3 370
960
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 23
23
Strength to Weight: Axial, points 28
26
Strength to Weight: Bending, points 24
22
Thermal Diffusivity, mm2/s 3.2
3.8
Thermal Shock Resistance, points 21
23

Alloy Composition

Carbon (C), % 0.080 to 0.16
1.4 to 2.0
Chromium (Cr), % 20 to 22.5
27 to 32
Cobalt (Co), % 18.5 to 21
47.5 to 64.1
Iron (Fe), % 24.3 to 36.2
0 to 3.0
Manganese (Mn), % 1.0 to 2.0
0
Molybdenum (Mo), % 2.5 to 3.5
0 to 1.0
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 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
7.5 to 9.5