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R31233 Cobalt vs. ASTM A148 Cast Steel

R31233 cobalt belongs to the cobalt alloys classification, while ASTM A148 cast steel belongs to the iron alloys. There are 27 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is R31233 cobalt and the bottom bar is ASTM A148 cast steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
190
Elongation at Break, % 17
5.7 to 25
Fatigue Strength, MPa 220
280 to 670
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 85
73
Tensile Strength: Ultimate (UTS), MPa 1020
630 to 1300
Tensile Strength: Yield (Proof), MPa 420
390 to 1160

Thermal Properties

Latent Heat of Fusion, J/g 320
250
Melting Completion (Liquidus), °C 1350
1460
Melting Onset (Solidus), °C 1330
1420
Specific Heat Capacity, J/kg-K 440
470
Thermal Conductivity, W/m-K 12
37 to 47
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
7.3 to 7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
8.3 to 8.6

Otherwise Unclassified Properties

Density, g/cm3 8.6
7.8
Embodied Carbon, kg CO2/kg material 8.4
1.5 to 1.7
Embodied Energy, MJ/kg 110
20 to 22
Embodied Water, L/kg 480
48 to 53

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
71 to 150
Resilience: Unit (Modulus of Resilience), kJ/m3 410
400 to 3570
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 33
22 to 46
Strength to Weight: Bending, points 26
21 to 34
Thermal Diffusivity, mm2/s 3.2
9.9 to 13
Thermal Shock Resistance, points 25
18 to 38