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AWS BCo-1 vs. EN 1.7767 Steel

AWS BCo-1 belongs to the cobalt alloys classification, while EN 1.7767 steel belongs to the iron alloys. There are 18 material properties with values for both materials. Properties with values for just one material (16, in this case) are not shown.

For each property being compared, the top bar is AWS BCo-1 and the bottom bar is EN 1.7767 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.3
0.29
Shear Modulus, GPa 78
74
Tensile Strength: Ultimate (UTS), MPa 700
670 to 690

Thermal Properties

Latent Heat of Fusion, J/g 420
250
Melting Completion (Liquidus), °C 1150
1470
Melting Onset (Solidus), °C 1120
1430
Specific Heat Capacity, J/kg-K 480
470
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Density, g/cm3 8.1
7.9
Embodied Carbon, kg CO2/kg material 8.0
2.4
Embodied Energy, MJ/kg 110
33
Embodied Water, L/kg 430
64

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 24
24
Strength to Weight: Bending, points 22
22
Thermal Shock Resistance, points 21
19 to 20

Alloy Composition

Aluminum (Al), % 0 to 0.050
0
Boron (B), % 0.7 to 0.9
0
Carbon (C), % 0.35 to 0.45
0.1 to 0.15
Chromium (Cr), % 18 to 20
2.8 to 3.3
Cobalt (Co), % 46 to 54
0
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 0 to 1.0
93.8 to 95.8
Manganese (Mn), % 0
0.3 to 0.6
Molybdenum (Mo), % 0
0.9 to 1.1
Nickel (Ni), % 16 to 18
0 to 0.25
Niobium (Nb), % 0
0 to 0.070
Nitrogen (N), % 0
0 to 0.012
Phosphorus (P), % 0 to 0.020
0 to 0.015
Selenium (Se), % 0 to 0.0050
0
Silicon (Si), % 7.5 to 8.5
0 to 0.15
Sulfur (S), % 0 to 0.020
0 to 0.0050
Titanium (Ti), % 0 to 0.050
0 to 0.030
Tungsten (W), % 3.5 to 4.5
0
Vanadium (V), % 0
0.2 to 0.3
Zirconium (Zr), % 0 to 0.050
0
Residuals, % 0 to 0.5
0