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R30016 Cobalt vs. S36200 Stainless Steel

R30016 cobalt belongs to the cobalt alloys classification, while S36200 stainless steel belongs to the iron alloys. There are 28 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 R30016 cobalt and the bottom bar is S36200 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
190
Elongation at Break, % 8.4
3.4 to 4.6
Fatigue Strength, MPa 290
450 to 570
Poisson's Ratio 0.28
0.28
Rockwell C Hardness 37
25 to 33
Shear Modulus, GPa 85
76
Tensile Strength: Ultimate (UTS), MPa 1010
1180 to 1410
Tensile Strength: Yield (Proof), MPa 580
960 to 1240

Thermal Properties

Latent Heat of Fusion, J/g 320
280
Melting Completion (Liquidus), °C 1360
1440
Melting Onset (Solidus), °C 1270
1400
Specific Heat Capacity, J/kg-K 450
480
Thermal Conductivity, W/m-K 15
16
Thermal Expansion, µm/m-K 14
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
2.6

Otherwise Unclassified Properties

Density, g/cm3 8.5
7.8
Embodied Carbon, kg CO2/kg material 7.7
2.8
Embodied Energy, MJ/kg 110
40
Embodied Water, L/kg 500
120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 72
46 to 51
Resilience: Unit (Modulus of Resilience), kJ/m3 770
2380 to 3930
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 33
42 to 50
Strength to Weight: Bending, points 26
32 to 36
Thermal Diffusivity, mm2/s 3.9
4.3
Thermal Shock Resistance, points 24
40 to 48

Alloy Composition

Aluminum (Al), % 0
0 to 0.1
Carbon (C), % 0.9 to 1.4
0 to 0.050
Chromium (Cr), % 28 to 32
14 to 14.5
Cobalt (Co), % 49.6 to 66.9
0
Iron (Fe), % 0 to 3.0
75.4 to 79.5
Manganese (Mn), % 0.5 to 2.0
0 to 0.5
Molybdenum (Mo), % 0 to 1.5
0 to 0.3
Nickel (Ni), % 0 to 3.0
6.5 to 7.0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0.2 to 2.0
0 to 0.3
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0
0.6 to 0.9
Tungsten (W), % 3.5 to 5.5
0