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Austenitic Grey Cast Iron vs. R30816 Cobalt

Austenitic grey cast iron belongs to the iron alloys classification, while R30816 cobalt belongs to the cobalt alloys. There are 19 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is austenitic grey cast iron and the bottom bar is R30816 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 110 to 210
280
Elastic (Young's, Tensile) Modulus, GPa 180
210
Poisson's Ratio 0.29 to 0.3
0.3
Shear Modulus, GPa 69 to 72
81
Tensile Strength: Ultimate (UTS), MPa 150 to 230
1020

Thermal Properties

Latent Heat of Fusion, J/g 280 to 350
300
Melting Completion (Liquidus), °C 1340 to 1400
1540
Melting Onset (Solidus), °C 1290 to 1350
1460
Specific Heat Capacity, J/kg-K 470 to 490
420
Thermal Expansion, µm/m-K 13 to 14
12

Otherwise Unclassified Properties

Density, g/cm3 7.7 to 8.1
9.1
Embodied Carbon, kg CO2/kg material 3.1 to 4.7
20
Embodied Energy, MJ/kg 43 to 65
320
Embodied Water, L/kg 93 to 120
440

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23 to 25
22
Strength to Weight: Axial, points 5.3 to 8.2
31
Strength to Weight: Bending, points 7.9 to 11
25
Thermal Shock Resistance, points 4.5 to 6.5
28