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N08367 Stainless Steel vs. R30155 Cobalt

Both N08367 stainless steel and R30155 cobalt are iron alloys. They have 76% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is N08367 stainless steel and the bottom bar is R30155 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210
220
Elastic (Young's, Tensile) Modulus, GPa 210
210
Elongation at Break, % 34
34
Fatigue Strength, MPa 280
310
Poisson's Ratio 0.28
0.29
Reduction in Area, % 56
34
Shear Modulus, GPa 80
81
Shear Strength, MPa 490
570
Tensile Strength: Ultimate (UTS), MPa 740
850
Tensile Strength: Yield (Proof), MPa 350
390

Thermal Properties

Latent Heat of Fusion, J/g 310
300
Maximum Temperature: Corrosion, °C 430
570
Maximum Temperature: Mechanical, °C 1100
1100
Melting Completion (Liquidus), °C 1460
1470
Melting Onset (Solidus), °C 1410
1420
Specific Heat Capacity, J/kg-K 460
450
Thermal Conductivity, W/m-K 12
12
Thermal Expansion, µm/m-K 15
14

Otherwise Unclassified Properties

Base Metal Price, % relative 33
80
Density, g/cm3 8.1
8.5
Embodied Carbon, kg CO2/kg material 6.2
9.7
Embodied Energy, MJ/kg 84
150
Embodied Water, L/kg 200
300

Common Calculations

PREN (Pitting Resistance) 46
37
Resilience: Ultimate (Unit Rupture Work), MJ/m3 210
230
Resilience: Unit (Modulus of Resilience), kJ/m3 290
370
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 25
28
Strength to Weight: Bending, points 22
24
Thermal Diffusivity, mm2/s 3.2
3.2
Thermal Shock Resistance, points 17
21

Alloy Composition

Carbon (C), % 0 to 0.030
0.080 to 0.16
Chromium (Cr), % 20 to 22
20 to 22.5
Cobalt (Co), % 0
18.5 to 21
Copper (Cu), % 0 to 0.75
0
Iron (Fe), % 41.4 to 50.3
24.3 to 36.2
Manganese (Mn), % 0 to 2.0
1.0 to 2.0
Molybdenum (Mo), % 6.0 to 7.0
2.5 to 3.5
Nickel (Ni), % 23.5 to 25.5
19 to 21
Niobium (Nb), % 0
0.75 to 1.3
Nitrogen (N), % 0.18 to 0.25
0 to 0.2
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Tantalum (Ta), % 0
0.75 to 1.3
Tungsten (W), % 0
2.0 to 3.0