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AISI 316L Stainless Steel vs. AWS BCo-1

AISI 316L stainless steel belongs to the iron alloys classification, while AWS BCo-1 belongs to the cobalt alloys. They have a modest 30% 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 AISI 316L 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 530 to 1160
700

Thermal Properties

Latent Heat of Fusion, J/g 290
420
Melting Completion (Liquidus), °C 1400
1150
Melting Onset (Solidus), °C 1380
1120
Specific Heat Capacity, J/kg-K 470
480
Thermal Expansion, µm/m-K 16
12

Otherwise Unclassified Properties

Density, g/cm3 7.9
8.1
Embodied Carbon, kg CO2/kg material 3.9
8.0
Embodied Energy, MJ/kg 53
110
Embodied Water, L/kg 150
430

Common Calculations

Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 19 to 41
24
Strength to Weight: Bending, points 18 to 31
22
Thermal Shock Resistance, points 12 to 25
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), % 16 to 18
18 to 20
Cobalt (Co), % 0
46 to 54
Iron (Fe), % 62 to 72
0 to 1.0
Manganese (Mn), % 0 to 2.0
0
Molybdenum (Mo), % 2.0 to 3.0
0
Nickel (Ni), % 10 to 14
16 to 18
Nitrogen (N), % 0 to 0.1
0
Phosphorus (P), % 0 to 0.045
0 to 0.020
Selenium (Se), % 0
0 to 0.0050
Silicon (Si), % 0 to 0.75
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