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R30006 Cobalt vs. ASTM A369 Grade FP2

R30006 cobalt belongs to the cobalt alloys classification, while ASTM A369 grade FP2 belongs to the iron alloys. There are 27 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 R30006 cobalt and the bottom bar is ASTM A369 grade FP2.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
190
Elongation at Break, % 1.0
20
Fatigue Strength, MPa 260
160
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 85
73
Tensile Strength: Ultimate (UTS), MPa 900
430
Tensile Strength: Yield (Proof), MPa 540
240

Thermal Properties

Latent Heat of Fusion, J/g 320
250
Melting Completion (Liquidus), °C 1400
1470
Melting Onset (Solidus), °C 1290
1430
Specific Heat Capacity, J/kg-K 450
470
Thermal Conductivity, W/m-K 15
49
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.6
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 1.7
8.2

Otherwise Unclassified Properties

Density, g/cm3 8.6
7.9
Embodied Carbon, kg CO2/kg material 7.8
1.6
Embodied Energy, MJ/kg 110
20
Embodied Water, L/kg 500
50

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.8
75
Resilience: Unit (Modulus of Resilience), kJ/m3 670
150
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 29
15
Strength to Weight: Bending, points 24
16
Thermal Diffusivity, mm2/s 3.9
13
Thermal Shock Resistance, points 26
13

Alloy Composition

Carbon (C), % 0.9 to 1.4
0.1 to 0.2
Chromium (Cr), % 27 to 32
0.5 to 0.81
Cobalt (Co), % 48.6 to 68.1
0
Iron (Fe), % 0 to 3.0
97.4 to 98.6
Manganese (Mn), % 0
0.3 to 0.61
Molybdenum (Mo), % 0 to 1.0
0.44 to 0.65
Nickel (Ni), % 0 to 3.0
0
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0 to 2.0
0.1 to 0.3
Sulfur (S), % 0
0 to 0.025
Tungsten (W), % 4.0 to 6.0
0