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R30006 Cobalt vs. AISI 201L Stainless Steel

R30006 cobalt belongs to the cobalt alloys classification, while AISI 201L stainless steel belongs to the iron alloys. They have a modest 20% 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 (9, in this case) are not shown.

For each property being compared, the top bar is R30006 cobalt and the bottom bar is AISI 201L stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
200
Elongation at Break, % 1.0
22 to 46
Fatigue Strength, MPa 260
270 to 530
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 85
77
Tensile Strength: Ultimate (UTS), MPa 900
740 to 1040
Tensile Strength: Yield (Proof), MPa 540
290 to 790

Thermal Properties

Latent Heat of Fusion, J/g 320
280
Melting Completion (Liquidus), °C 1400
1410
Melting Onset (Solidus), °C 1290
1370
Specific Heat Capacity, J/kg-K 450
480
Thermal Conductivity, W/m-K 15
15
Thermal Expansion, µm/m-K 11
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.6
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 1.7
2.9

Otherwise Unclassified Properties

Density, g/cm3 8.6
7.7
Embodied Carbon, kg CO2/kg material 7.8
2.6
Embodied Energy, MJ/kg 110
38
Embodied Water, L/kg 500
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.8
210 to 300
Resilience: Unit (Modulus of Resilience), kJ/m3 670
220 to 1570
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 29
27 to 37
Strength to Weight: Bending, points 24
24 to 30
Thermal Diffusivity, mm2/s 3.9
4.0
Thermal Shock Resistance, points 26
16 to 23

Alloy Composition

Carbon (C), % 0.9 to 1.4
0 to 0.030
Chromium (Cr), % 27 to 32
16 to 18
Cobalt (Co), % 48.6 to 68.1
0
Iron (Fe), % 0 to 3.0
67.9 to 75
Manganese (Mn), % 0
5.5 to 7.5
Molybdenum (Mo), % 0 to 1.0
0
Nickel (Ni), % 0 to 3.0
3.5 to 5.5
Nitrogen (N), % 0
0 to 0.25
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0 to 2.0
0 to 0.75
Sulfur (S), % 0
0 to 0.030
Tungsten (W), % 4.0 to 6.0
0