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AWS E409Nb vs. R30006 Cobalt

AWS E409Nb belongs to the iron alloys classification, while R30006 cobalt belongs to the cobalt 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 AWS E409Nb and the bottom bar is R30006 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
220
Elongation at Break, % 23
1.0
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
85
Tensile Strength: Ultimate (UTS), MPa 500
900
Tensile Strength: Yield (Proof), MPa 380
540

Thermal Properties

Latent Heat of Fusion, J/g 280
320
Melting Completion (Liquidus), °C 1460
1400
Melting Onset (Solidus), °C 1410
1290
Specific Heat Capacity, J/kg-K 480
450
Thermal Conductivity, W/m-K 25
15
Thermal Expansion, µm/m-K 14
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
1.6
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
1.7

Otherwise Unclassified Properties

Density, g/cm3 7.8
8.6
Embodied Carbon, kg CO2/kg material 2.9
7.8
Embodied Energy, MJ/kg 42
110
Embodied Water, L/kg 100
500

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
7.8
Resilience: Unit (Modulus of Resilience), kJ/m3 380
670
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 18
29
Strength to Weight: Bending, points 18
24
Thermal Diffusivity, mm2/s 6.8
3.9
Thermal Shock Resistance, points 14
26

Alloy Composition

Carbon (C), % 0 to 0.12
0.9 to 1.4
Chromium (Cr), % 11 to 14
27 to 32
Cobalt (Co), % 0
48.6 to 68.1
Copper (Cu), % 0 to 0.75
0
Iron (Fe), % 80.2 to 88.5
0 to 3.0
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 0 to 0.75
0 to 1.0
Nickel (Ni), % 0 to 0.6
0 to 3.0
Niobium (Nb), % 0.5 to 1.5
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0 to 2.0
Sulfur (S), % 0 to 0.030
0
Tungsten (W), % 0
4.0 to 6.0