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S35000 Stainless Steel vs. AWS BCo-1

S35000 stainless steel 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 (16, in this case) are not shown.

For each property being compared, the top bar is S35000 stainless steel and the bottom bar is AWS BCo-1.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.28
0.3
Shear Modulus, GPa 78
78
Tensile Strength: Ultimate (UTS), MPa 1300 to 1570
700

Thermal Properties

Latent Heat of Fusion, J/g 280
420
Melting Completion (Liquidus), °C 1460
1150
Melting Onset (Solidus), °C 1410
1120
Specific Heat Capacity, J/kg-K 470
480
Thermal Expansion, µm/m-K 11
12

Otherwise Unclassified Properties

Density, g/cm3 7.8
8.1
Embodied Carbon, kg CO2/kg material 3.2
8.0
Embodied Energy, MJ/kg 44
110
Embodied Water, L/kg 130
430

Common Calculations

Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 46 to 56
24
Strength to Weight: Bending, points 34 to 38
22
Thermal Shock Resistance, points 42 to 51
21

Alloy Composition


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Aluminum (Al), % 0
0 to 0.050
Boron (B), % 0
0.7 to 0.9
Carbon (C), % 0.070 to 0.11
0.35 to 0.45
Chromium (Cr), % 16 to 17
18 to 20
Cobalt (Co), % 0
46 to 54
Iron (Fe), % 72.7 to 76.9
0 to 1.0
Manganese (Mn), % 0.5 to 1.3
0
Molybdenum (Mo), % 2.5 to 3.2
0
Nickel (Ni), % 4.0 to 5.0
16 to 18
Nitrogen (N), % 0.070 to 0.13
0
Phosphorus (P), % 0 to 0.040
0 to 0.020
Selenium (Se), % 0
0 to 0.0050
Silicon (Si), % 0 to 0.5
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