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AWS E630 vs. AWS BCo-1

AWS E630 belongs to the iron alloys classification, while AWS BCo-1 belongs to the cobalt alloys. They have a modest 22% of their average alloy composition in common, which, by itself, doesn't mean much. There are 18 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is AWS E630 and the bottom bar is AWS BCo-1.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.28
0.3
Shear Modulus, GPa 76
78
Tensile Strength: Ultimate (UTS), MPa 1040
700

Thermal Properties

Latent Heat of Fusion, J/g 280
420
Melting Completion (Liquidus), °C 1430
1150
Melting Onset (Solidus), °C 1380
1120
Specific Heat Capacity, J/kg-K 470
480
Thermal Expansion, µm/m-K 14
12

Otherwise Unclassified Properties

Density, g/cm3 7.8
8.1
Embodied Carbon, kg CO2/kg material 2.8
8.0
Embodied Energy, MJ/kg 40
110
Embodied Water, L/kg 140
430

Common Calculations

Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 37
24
Strength to Weight: Bending, points 29
22
Thermal Shock Resistance, points 28
21

Alloy Composition


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Aluminum (Al), % 0
0 to 0.050
Boron (B), % 0
0.7 to 0.9
Carbon (C), % 0 to 0.050
0.35 to 0.45
Chromium (Cr), % 16 to 16.8
18 to 20
Cobalt (Co), % 0
46 to 54
Copper (Cu), % 3.3 to 4.0
0
Iron (Fe), % 71.6 to 75.9
0 to 1.0
Manganese (Mn), % 0.25 to 0.75
0
Molybdenum (Mo), % 0 to 0.75
0
Nickel (Ni), % 4.5 to 5.0
16 to 18
Niobium (Nb), % 0.15 to 0.3
0
Phosphorus (P), % 0 to 0.040
0 to 0.020
Selenium (Se), % 0
0 to 0.0050
Silicon (Si), % 0 to 0.75
7.5 to 8.5
Sulfur (S), % 0 to 0.030
0 to 0.020
Titanium (Ti), % 0
0 to 0.050
Tungsten (W), % 0
3.5 to 4.5
Zirconium (Zr), % 0
0 to 0.050
Residuals, % 0
0 to 0.5