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AISI 310 Stainless Steel vs. R30035 Cobalt

AISI 310 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 310 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, % 34 to 45
9.0 to 46
Fatigue Strength, MPa 240 to 280
170 to 740
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 78
84 to 89
Tensile Strength: Ultimate (UTS), MPa 600 to 710
900 to 1900
Tensile Strength: Yield (Proof), MPa 260 to 350
300 to 1650

Thermal Properties

Latent Heat of Fusion, J/g 310
320
Melting Completion (Liquidus), °C 1450
1440
Melting Onset (Solidus), °C 1400
1320
Specific Heat Capacity, J/kg-K 480
440
Thermal Conductivity, W/m-K 15
11
Thermal Expansion, µm/m-K 15
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
1.8

Otherwise Unclassified Properties

Base Metal Price, % relative 25
100
Density, g/cm3 7.8
8.7
Embodied Carbon, kg CO2/kg material 4.3
10
Embodied Energy, MJ/kg 61
140
Embodied Water, L/kg 190
410

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 200 to 220
160 to 320
Resilience: Unit (Modulus of Resilience), kJ/m3 170 to 310
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 to 25
29 to 61
Strength to Weight: Bending, points 20 to 22
24 to 39
Thermal Diffusivity, mm2/s 3.9
3.0
Thermal Shock Resistance, points 14 to 17
23 to 46

Alloy Composition

Boron (B), % 0
0 to 0.015
Carbon (C), % 0 to 0.25
0 to 0.025
Chromium (Cr), % 24 to 26
19 to 21
Cobalt (Co), % 0
29.1 to 39
Iron (Fe), % 48.2 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
Phosphorus (P), % 0 to 0.045
0 to 0.015
Silicon (Si), % 0 to 1.5
0 to 0.15
Sulfur (S), % 0 to 0.030
0 to 0.010
Titanium (Ti), % 0
0 to 1.0

Comparable Variants