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R30605 Cobalt vs. ASTM A182 Grade F23

R30605 cobalt belongs to the cobalt alloys classification, while ASTM A182 grade F23 belongs to the iron alloys. There are 25 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is R30605 cobalt and the bottom bar is ASTM A182 grade F23.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 34
22
Fatigue Strength, MPa 260 to 590
320
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 81
74
Tensile Strength: Ultimate (UTS), MPa 1130 to 1900
570
Tensile Strength: Yield (Proof), MPa 470 to 1600
460

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Melting Completion (Liquidus), °C 1410
1500
Melting Onset (Solidus), °C 1330
1450
Specific Heat Capacity, J/kg-K 410
470
Thermal Conductivity, W/m-K 9.6
41
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
7.8
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
8.9

Otherwise Unclassified Properties

Density, g/cm3 9.6
8.0
Embodied Carbon, kg CO2/kg material 9.8
2.5
Embodied Energy, MJ/kg 140
36
Embodied Water, L/kg 450
59

Common Calculations

Stiffness to Weight: Axial, points 12
13
Stiffness to Weight: Bending, points 21
24
Strength to Weight: Axial, points 33 to 55
20
Strength to Weight: Bending, points 25 to 36
19
Thermal Diffusivity, mm2/s 2.5
11
Thermal Shock Resistance, points 31 to 52
17

Alloy Composition

Aluminum (Al), % 0
0 to 0.030
Boron (B), % 0
0.0010 to 0.0060
Carbon (C), % 0.050 to 0.15
0.040 to 0.1
Chromium (Cr), % 19 to 21
1.9 to 2.6
Cobalt (Co), % 46.4 to 57
0
Iron (Fe), % 0 to 3.0
93.2 to 96.2
Manganese (Mn), % 1.0 to 2.0
0.1 to 0.6
Molybdenum (Mo), % 0
0.050 to 0.3
Nickel (Ni), % 9.0 to 11
0 to 0.4
Niobium (Nb), % 0
0.020 to 0.080
Nitrogen (N), % 0
0 to 0.015
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 0.4
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.010
Titanium (Ti), % 0
0.0050 to 0.060
Tungsten (W), % 14 to 16
1.5 to 1.8
Vanadium (V), % 0
0.2 to 0.3