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S66286 Stainless Steel vs. R30008 Cobalt

S66286 stainless steel belongs to the iron alloys classification, while R30008 cobalt belongs to the cobalt alloys. They have 48% of their average alloy composition in common. There are 23 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 S66286 stainless steel and the bottom bar is R30008 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
210
Elongation at Break, % 17 to 40
1.1 to 73
Fatigue Strength, MPa 240 to 410
320 to 530
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 75
83
Tensile Strength: Ultimate (UTS), MPa 620 to 1020
950 to 1700
Tensile Strength: Yield (Proof), MPa 280 to 670
500 to 1080

Thermal Properties

Latent Heat of Fusion, J/g 300
320
Melting Completion (Liquidus), °C 1430
1400
Melting Onset (Solidus), °C 1370
1330
Specific Heat Capacity, J/kg-K 470
450
Thermal Expansion, µm/m-K 17
13

Otherwise Unclassified Properties

Base Metal Price, % relative 26
95
Density, g/cm3 7.9
8.4
Embodied Carbon, kg CO2/kg material 6.0
8.1
Embodied Energy, MJ/kg 87
110
Embodied Water, L/kg 170
400

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 190 to 1150
590 to 2720
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 22 to 36
31 to 56
Strength to Weight: Bending, points 20 to 28
25 to 37
Thermal Shock Resistance, points 13 to 22
25 to 44

Alloy Composition

Aluminum (Al), % 0 to 0.35
0
Boron (B), % 0.0010 to 0.010
0 to 0.0010
Carbon (C), % 0 to 0.080
0 to 0.15
Chromium (Cr), % 13.5 to 16
18.5 to 21.5
Cobalt (Co), % 0
39 to 42
Iron (Fe), % 49.1 to 59.5
7.6 to 20
Manganese (Mn), % 0 to 2.0
1.0 to 2.0
Molybdenum (Mo), % 1.0 to 1.5
6.5 to 7.5
Nickel (Ni), % 24 to 27
15 to 18
Phosphorus (P), % 0 to 0.040
0 to 0.015
Silicon (Si), % 0 to 1.0
0 to 1.2
Sulfur (S), % 0 to 0.030
0 to 0.015
Titanium (Ti), % 1.9 to 2.4
0
Vanadium (V), % 0.1 to 0.5
0

Comparable Variants