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R30012 Cobalt vs. AWS E110C-K4

R30012 cobalt belongs to the cobalt alloys classification, while AWS E110C-K4 belongs to the iron alloys. There are 26 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is R30012 cobalt and the bottom bar is AWS E110C-K4.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
190
Elongation at Break, % 1.0
17
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 86
73
Tensile Strength: Ultimate (UTS), MPa 830
850
Tensile Strength: Yield (Proof), MPa 650
780

Thermal Properties

Latent Heat of Fusion, J/g 320
250
Melting Completion (Liquidus), °C 1470
1460
Melting Onset (Solidus), °C 1280
1410
Specific Heat Capacity, J/kg-K 440
470
Thermal Conductivity, W/m-K 15
41
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.8
8.0
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
9.2

Otherwise Unclassified Properties

Density, g/cm3 8.8
7.8
Embodied Carbon, kg CO2/kg material 8.3
1.7
Embodied Energy, MJ/kg 120
23
Embodied Water, L/kg 480
54

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.7
140
Resilience: Unit (Modulus of Resilience), kJ/m3 960
1600
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 26
30
Strength to Weight: Bending, points 22
25
Thermal Diffusivity, mm2/s 3.8
11
Thermal Shock Resistance, points 23
25

Alloy Composition

Carbon (C), % 1.4 to 2.0
0 to 0.15
Chromium (Cr), % 27 to 32
0.15 to 0.65
Cobalt (Co), % 47.5 to 64.1
0
Copper (Cu), % 0
0 to 0.35
Iron (Fe), % 0 to 3.0
92.1 to 98.4
Manganese (Mn), % 0
0.75 to 2.3
Molybdenum (Mo), % 0 to 1.0
0.25 to 0.65
Nickel (Ni), % 0 to 3.0
0.5 to 2.5
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0 to 2.0
0 to 0.8
Sulfur (S), % 0
0 to 0.025
Tungsten (W), % 7.5 to 9.5
0
Vanadium (V), % 0
0 to 0.030
Residuals, % 0
0 to 0.5