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AWS BCo-1 vs. SAE-AISI H42 Steel

AWS BCo-1 belongs to the cobalt alloys classification, while SAE-AISI H42 steel belongs to the iron alloys. There are 18 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is AWS BCo-1 and the bottom bar is SAE-AISI H42 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.3
0.29
Shear Modulus, GPa 78
77
Tensile Strength: Ultimate (UTS), MPa 700
700 to 1980

Thermal Properties

Latent Heat of Fusion, J/g 420
260
Melting Completion (Liquidus), °C 1150
1620
Melting Onset (Solidus), °C 1120
1570
Specific Heat Capacity, J/kg-K 480
440
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Density, g/cm3 8.1
8.4
Embodied Carbon, kg CO2/kg material 8.0
8.8
Embodied Energy, MJ/kg 110
130
Embodied Water, L/kg 430
98

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 24
23 to 65
Strength to Weight: Bending, points 22
21 to 42
Thermal Shock Resistance, points 21
20 to 57

Alloy Composition

Aluminum (Al), % 0 to 0.050
0
Boron (B), % 0.7 to 0.9
0
Carbon (C), % 0.35 to 0.45
0.55 to 0.7
Chromium (Cr), % 18 to 20
3.8 to 4.5
Cobalt (Co), % 46 to 54
0
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 0 to 1.0
79.3 to 83.8
Manganese (Mn), % 0
0.15 to 0.4
Molybdenum (Mo), % 0
4.5 to 5.5
Nickel (Ni), % 16 to 18
0 to 0.3
Phosphorus (P), % 0 to 0.020
0 to 0.030
Selenium (Se), % 0 to 0.0050
0
Silicon (Si), % 7.5 to 8.5
0
Sulfur (S), % 0 to 0.020
0 to 0.030
Titanium (Ti), % 0 to 0.050
0
Tungsten (W), % 3.5 to 4.5
5.5 to 6.8
Vanadium (V), % 0
1.8 to 2.2
Zirconium (Zr), % 0 to 0.050
0
Residuals, % 0 to 0.5
0