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AISI 310Cb Stainless Steel vs. R30008 Cobalt

AISI 310Cb stainless steel belongs to the iron alloys classification, while R30008 cobalt belongs to the cobalt alloys. They have 52% of their average alloy composition in common. There are 23 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is AISI 310Cb stainless steel and the bottom bar is R30008 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 39
1.1 to 73
Fatigue Strength, MPa 200
320 to 530
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 78
83
Tensile Strength: Ultimate (UTS), MPa 580
950 to 1700
Tensile Strength: Yield (Proof), MPa 230
500 to 1080

Thermal Properties

Latent Heat of Fusion, J/g 310
320
Melting Completion (Liquidus), °C 1410
1400
Melting Onset (Solidus), °C 1360
1330
Specific Heat Capacity, J/kg-K 480
450
Thermal Expansion, µm/m-K 16
13

Otherwise Unclassified Properties

Base Metal Price, % relative 28
95
Density, g/cm3 7.9
8.4
Embodied Carbon, kg CO2/kg material 4.8
8.1
Embodied Energy, MJ/kg 69
110
Embodied Water, L/kg 190
400

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 140
590 to 2720
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 20
31 to 56
Strength to Weight: Bending, points 20
25 to 37
Thermal Shock Resistance, points 13
25 to 44

Alloy Composition

Boron (B), % 0
0 to 0.0010
Carbon (C), % 0 to 0.080
0 to 0.15
Chromium (Cr), % 24 to 26
18.5 to 21.5
Cobalt (Co), % 0
39 to 42
Iron (Fe), % 47.2 to 57
7.6 to 20
Manganese (Mn), % 0 to 2.0
1.0 to 2.0
Molybdenum (Mo), % 0
6.5 to 7.5
Nickel (Ni), % 19 to 22
15 to 18
Niobium (Nb), % 0 to 1.1
0
Phosphorus (P), % 0 to 0.045
0 to 0.015
Silicon (Si), % 0 to 1.5
0 to 1.2
Sulfur (S), % 0 to 0.030
0 to 0.015