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AISI 310HCb Stainless Steel vs. R30035 Cobalt

AISI 310HCb stainless steel belongs to the iron alloys classification, while R30035 cobalt belongs to the cobalt alloys. They have 41% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is AISI 310HCb stainless steel and the bottom bar is R30035 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
220 to 230
Elongation at Break, % 46
9.0 to 46
Fatigue Strength, MPa 210
170 to 740
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 78
84 to 89
Tensile Strength: Ultimate (UTS), MPa 590
900 to 1900
Tensile Strength: Yield (Proof), MPa 230
300 to 1650

Thermal Properties

Latent Heat of Fusion, J/g 300
320
Melting Completion (Liquidus), °C 1410
1440
Melting Onset (Solidus), °C 1370
1320
Specific Heat Capacity, J/kg-K 480
440
Thermal Conductivity, W/m-K 15
11
Thermal Expansion, µm/m-K 16
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
1.8

Otherwise Unclassified Properties

Base Metal Price, % relative 28
100
Density, g/cm3 7.9
8.7
Embodied Carbon, kg CO2/kg material 4.8
10
Embodied Energy, MJ/kg 69
140
Embodied Water, L/kg 190
410

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 210
160 to 320
Resilience: Unit (Modulus of Resilience), kJ/m3 130
210 to 5920
Stiffness to Weight: Axial, points 14
14 to 15
Stiffness to Weight: Bending, points 25
23 to 24
Strength to Weight: Axial, points 21
29 to 61
Strength to Weight: Bending, points 20
24 to 39
Thermal Diffusivity, mm2/s 3.9
3.0
Thermal Shock Resistance, points 13
23 to 46

Alloy Composition

Boron (B), % 0
0 to 0.015
Carbon (C), % 0.040 to 0.1
0 to 0.025
Chromium (Cr), % 24 to 26
19 to 21
Cobalt (Co), % 0
29.1 to 39
Iron (Fe), % 48 to 57
0 to 1.0
Manganese (Mn), % 0 to 2.0
0 to 0.15
Molybdenum (Mo), % 0
9.0 to 10.5
Nickel (Ni), % 19 to 22
33 to 37
Niobium (Nb), % 0 to 1.1
0
Phosphorus (P), % 0 to 0.045
0 to 0.015
Silicon (Si), % 0 to 0.75
0 to 0.15
Sulfur (S), % 0 to 0.030
0 to 0.010
Titanium (Ti), % 0
0 to 1.0