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S34565 Stainless Steel vs. AWS BCo-1

S34565 stainless steel belongs to the iron alloys classification, while AWS BCo-1 belongs to the cobalt alloys. They have a modest 37% 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 (18, in this case) are not shown.

For each property being compared, the top bar is S34565 stainless steel and the bottom bar is AWS BCo-1.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
200
Poisson's Ratio 0.28
0.3
Shear Modulus, GPa 80
78
Tensile Strength: Ultimate (UTS), MPa 900
700

Thermal Properties

Latent Heat of Fusion, J/g 310
420
Melting Completion (Liquidus), °C 1420
1150
Melting Onset (Solidus), °C 1380
1120
Specific Heat Capacity, J/kg-K 470
480
Thermal Expansion, µm/m-K 15
12

Otherwise Unclassified Properties

Density, g/cm3 7.9
8.1
Embodied Carbon, kg CO2/kg material 5.3
8.0
Embodied Energy, MJ/kg 73
110
Embodied Water, L/kg 210
430

Common Calculations

Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 32
24
Strength to Weight: Bending, points 26
22
Thermal Shock Resistance, points 22
21

Alloy Composition

Aluminum (Al), % 0
0 to 0.050
Boron (B), % 0
0.7 to 0.9
Carbon (C), % 0 to 0.030
0.35 to 0.45
Chromium (Cr), % 23 to 25
18 to 20
Cobalt (Co), % 0
46 to 54
Iron (Fe), % 43.2 to 51.6
0 to 1.0
Manganese (Mn), % 5.0 to 7.0
0
Molybdenum (Mo), % 4.0 to 5.0
0
Nickel (Ni), % 16 to 18
16 to 18
Niobium (Nb), % 0 to 0.1
0
Nitrogen (N), % 0.4 to 0.6
0
Phosphorus (P), % 0 to 0.030
0 to 0.020
Selenium (Se), % 0
0 to 0.0050
Silicon (Si), % 0 to 1.0
7.5 to 8.5
Sulfur (S), % 0 to 0.010
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