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R30016 Cobalt vs. ASTM A27 Cast Steel

R30016 cobalt belongs to the cobalt alloys classification, while ASTM A27 cast steel belongs to the iron alloys. There are 28 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is R30016 cobalt and the bottom bar is ASTM A27 cast steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
190
Elongation at Break, % 8.4
25 to 27
Fatigue Strength, MPa 290
170 to 230
Poisson's Ratio 0.28
0.29
Reduction in Area, % 8.0
34 to 40
Shear Modulus, GPa 85
73
Tensile Strength: Ultimate (UTS), MPa 1010
460 to 550
Tensile Strength: Yield (Proof), MPa 580
230 to 310

Thermal Properties

Latent Heat of Fusion, J/g 320
250
Melting Completion (Liquidus), °C 1360
1460
Melting Onset (Solidus), °C 1270
1420
Specific Heat Capacity, J/kg-K 450
470
Thermal Conductivity, W/m-K 15
52
Thermal Expansion, µm/m-K 14
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
7.0 to 7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
8.1

Otherwise Unclassified Properties

Density, g/cm3 8.5
7.8
Embodied Carbon, kg CO2/kg material 7.7
1.4
Embodied Energy, MJ/kg 110
18
Embodied Water, L/kg 500
45 to 46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 72
96 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 770
140 to 260
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 33
16 to 20
Strength to Weight: Bending, points 26
17 to 19
Thermal Diffusivity, mm2/s 3.9
14
Thermal Shock Resistance, points 24
15 to 18