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R30006 Cobalt vs. ASTM Grade LCB Steel

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

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
190
Elongation at Break, % 1.0
27
Fatigue Strength, MPa 260
200
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 85
72
Tensile Strength: Ultimate (UTS), MPa 900
540
Tensile Strength: Yield (Proof), MPa 540
270

Thermal Properties

Latent Heat of Fusion, J/g 320
250
Melting Completion (Liquidus), °C 1400
1450
Melting Onset (Solidus), °C 1290
1410
Specific Heat Capacity, J/kg-K 450
470
Thermal Conductivity, W/m-K 15
51
Thermal Expansion, µm/m-K 11
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.6
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 1.7
8.2

Otherwise Unclassified Properties

Density, g/cm3 8.6
7.8
Embodied Carbon, kg CO2/kg material 7.8
1.4
Embodied Energy, MJ/kg 110
18
Embodied Water, L/kg 500
45

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.8
120
Resilience: Unit (Modulus of Resilience), kJ/m3 670
200
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 29
19
Strength to Weight: Bending, points 24
19
Thermal Diffusivity, mm2/s 3.9
14
Thermal Shock Resistance, points 26
17

Alloy Composition


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Carbon (C), % 0.9 to 1.4
0 to 0.3
Chromium (Cr), % 27 to 32
0
Cobalt (Co), % 48.6 to 68.1
0
Iron (Fe), % 0 to 3.0
97 to 100
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0 to 1.0
0
Nickel (Ni), % 0 to 3.0
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 2.0
0 to 0.6
Sulfur (S), % 0
0 to 0.045
Tungsten (W), % 4.0 to 6.0
0
Residuals, % 0
0 to 1.0