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AWS BCo-1 vs. Type 4 Magnetic Alloy

AWS BCo-1 belongs to the cobalt alloys classification, while Type 4 magnetic alloy belongs to the nickel alloys. There are 18 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is AWS BCo-1 and the bottom bar is Type 4 magnetic alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.3
0.31
Shear Modulus, GPa 78
73
Tensile Strength: Ultimate (UTS), MPa 700
620 to 1100

Thermal Properties

Latent Heat of Fusion, J/g 420
290
Melting Completion (Liquidus), °C 1150
1420
Melting Onset (Solidus), °C 1120
1370
Specific Heat Capacity, J/kg-K 480
440
Thermal Expansion, µm/m-K 12
11

Otherwise Unclassified Properties

Density, g/cm3 8.1
8.8
Embodied Carbon, kg CO2/kg material 8.0
10
Embodied Energy, MJ/kg 110
140
Embodied Water, L/kg 430
210

Common Calculations

Stiffness to Weight: Axial, points 14
12
Stiffness to Weight: Bending, points 24
22
Strength to Weight: Axial, points 24
19 to 35
Strength to Weight: Bending, points 22
18 to 27
Thermal Shock Resistance, points 21
21 to 37

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 to 0.050
Chromium (Cr), % 18 to 20
0 to 0.3
Cobalt (Co), % 46 to 54
0 to 0.5
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 0 to 1.0
9.5 to 17.5
Manganese (Mn), % 0
0 to 0.8
Molybdenum (Mo), % 0
3.5 to 6.0
Nickel (Ni), % 16 to 18
79 to 82
Phosphorus (P), % 0 to 0.020
0 to 0.010
Selenium (Se), % 0 to 0.0050
0
Silicon (Si), % 7.5 to 8.5
0 to 0.5
Sulfur (S), % 0 to 0.020
0 to 0.020
Titanium (Ti), % 0 to 0.050
0
Tungsten (W), % 3.5 to 4.5
0
Zirconium (Zr), % 0 to 0.050
0
Residuals, % 0 to 0.5
0