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R30006 Cobalt vs. AWS ER80S-B6

R30006 cobalt belongs to the cobalt alloys classification, while AWS ER80S-B6 belongs to the iron alloys. There are 26 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 AWS ER80S-B6.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
190
Elongation at Break, % 1.0
19
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 85
74
Tensile Strength: Ultimate (UTS), MPa 900
620
Tensile Strength: Yield (Proof), MPa 540
540

Thermal Properties

Latent Heat of Fusion, J/g 320
260
Melting Completion (Liquidus), °C 1400
1460
Melting Onset (Solidus), °C 1290
1410
Specific Heat Capacity, J/kg-K 450
470
Thermal Conductivity, W/m-K 15
40
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.6
8.2
Electrical Conductivity: Equal Weight (Specific), % IACS 1.7
9.5

Otherwise Unclassified Properties

Density, g/cm3 8.6
7.8
Embodied Carbon, kg CO2/kg material 7.8
1.8
Embodied Energy, MJ/kg 110
24
Embodied Water, L/kg 500
71

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.8
110
Resilience: Unit (Modulus of Resilience), kJ/m3 670
750
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 29
22
Strength to Weight: Bending, points 24
21
Thermal Diffusivity, mm2/s 3.9
11
Thermal Shock Resistance, points 26
18

Alloy Composition


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Carbon (C), % 0.9 to 1.4
0 to 0.1
Chromium (Cr), % 27 to 32
4.5 to 6.0
Cobalt (Co), % 48.6 to 68.1
0
Copper (Cu), % 0
0 to 0.35
Iron (Fe), % 0 to 3.0
90.6 to 94.7
Manganese (Mn), % 0
0.4 to 0.7
Molybdenum (Mo), % 0 to 1.0
0.45 to 0.65
Nickel (Ni), % 0 to 3.0
0 to 0.6
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0 to 2.0
0 to 0.5
Sulfur (S), % 0
0 to 0.025
Tungsten (W), % 4.0 to 6.0
0
Residuals, % 0
0 to 0.5