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R30155 Cobalt vs. Austenitic Grey Cast Iron

Both R30155 cobalt and austenitic grey cast iron are iron alloys. There are 21 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is R30155 cobalt and the bottom bar is austenitic grey cast iron.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220
110 to 210
Elastic (Young's, Tensile) Modulus, GPa 210
180
Poisson's Ratio 0.29
0.29 to 0.3
Shear Modulus, GPa 81
69 to 72
Tensile Strength: Ultimate (UTS), MPa 850
150 to 230

Thermal Properties

Latent Heat of Fusion, J/g 300
280 to 350
Melting Completion (Liquidus), °C 1470
1340 to 1400
Melting Onset (Solidus), °C 1420
1290 to 1350
Specific Heat Capacity, J/kg-K 450
470 to 490
Thermal Expansion, µm/m-K 14
13 to 14

Otherwise Unclassified Properties

Base Metal Price, % relative 80
14 to 24
Density, g/cm3 8.5
7.7 to 8.1
Embodied Carbon, kg CO2/kg material 9.7
3.1 to 4.7
Embodied Energy, MJ/kg 150
43 to 65
Embodied Water, L/kg 300
93 to 120

Common Calculations

PREN (Pitting Resistance) 37
2.0 to 5.0
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 23
23 to 25
Strength to Weight: Axial, points 28
5.3 to 8.2
Strength to Weight: Bending, points 24
7.9 to 11
Thermal Shock Resistance, points 21
4.5 to 6.5