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R30006 Cobalt vs. AWS E90C-B9

R30006 cobalt belongs to the cobalt alloys classification, while AWS E90C-B9 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 E90C-B9.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
190
Elongation at Break, % 1.0
18
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 85
75
Tensile Strength: Ultimate (UTS), MPa 900
710
Tensile Strength: Yield (Proof), MPa 540
460

Thermal Properties

Latent Heat of Fusion, J/g 320
270
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
25
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.6
6.9
Electrical Conductivity: Equal Weight (Specific), % IACS 1.7
8.0

Otherwise Unclassified Properties

Density, g/cm3 8.6
7.8
Embodied Carbon, kg CO2/kg material 7.8
2.6
Embodied Energy, MJ/kg 110
37
Embodied Water, L/kg 500
91

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.8
110
Resilience: Unit (Modulus of Resilience), kJ/m3 670
550
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 29
25
Strength to Weight: Bending, points 24
23
Thermal Diffusivity, mm2/s 3.9
6.9
Thermal Shock Resistance, points 26
20

Alloy Composition


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Aluminum (Al), % 0
0 to 0.040
Carbon (C), % 0.9 to 1.4
0.080 to 0.13
Chromium (Cr), % 27 to 32
8.0 to 10.5
Cobalt (Co), % 48.6 to 68.1
0
Copper (Cu), % 0
0 to 0.2
Iron (Fe), % 0 to 3.0
84.4 to 90.9
Manganese (Mn), % 0
0 to 1.2
Molybdenum (Mo), % 0 to 1.0
0.85 to 1.2
Nickel (Ni), % 0 to 3.0
0 to 0.8
Niobium (Nb), % 0
0.020 to 0.1
Nitrogen (N), % 0
0.030 to 0.070
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0 to 2.0
0 to 0.5
Sulfur (S), % 0
0 to 0.015
Tungsten (W), % 4.0 to 6.0
0
Vanadium (V), % 0
0.15 to 0.3
Residuals, % 0
0 to 0.5