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R30016 Cobalt vs. AISI 201 Stainless Steel

R30016 cobalt belongs to the cobalt alloys classification, while AISI 201 stainless steel belongs to the iron alloys. They have a modest 22% of their average alloy composition in common, which, by itself, doesn't mean much. There are 27 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 R30016 cobalt and the bottom bar is AISI 201 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
200
Elongation at Break, % 8.4
4.6 to 51
Fatigue Strength, MPa 290
280 to 600
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 85
77
Tensile Strength: Ultimate (UTS), MPa 1010
650 to 1450
Tensile Strength: Yield (Proof), MPa 580
300 to 1080

Thermal Properties

Latent Heat of Fusion, J/g 320
280
Melting Completion (Liquidus), °C 1360
1410
Melting Onset (Solidus), °C 1270
1370
Specific Heat Capacity, J/kg-K 450
480
Thermal Conductivity, W/m-K 15
15
Thermal Expansion, µm/m-K 14
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
2.9

Otherwise Unclassified Properties

Density, g/cm3 8.5
7.7
Embodied Carbon, kg CO2/kg material 7.7
2.6
Embodied Energy, MJ/kg 110
38
Embodied Water, L/kg 500
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 72
61 to 340
Resilience: Unit (Modulus of Resilience), kJ/m3 770
230 to 2970
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 33
23 to 52
Strength to Weight: Bending, points 26
22 to 37
Thermal Diffusivity, mm2/s 3.9
4.0
Thermal Shock Resistance, points 24
14 to 32

Alloy Composition

Carbon (C), % 0.9 to 1.4
0 to 0.15
Chromium (Cr), % 28 to 32
16 to 18
Cobalt (Co), % 49.6 to 66.9
0
Iron (Fe), % 0 to 3.0
67.5 to 75
Manganese (Mn), % 0.5 to 2.0
5.5 to 7.5
Molybdenum (Mo), % 0 to 1.5
0
Nickel (Ni), % 0 to 3.0
3.5 to 5.5
Nitrogen (N), % 0
0 to 0.25
Phosphorus (P), % 0
0 to 0.060
Silicon (Si), % 0.2 to 2.0
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Tungsten (W), % 3.5 to 5.5
0