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S35140 Stainless Steel vs. AWS BNi-8

S35140 stainless steel belongs to the iron alloys classification, while AWS BNi-8 belongs to the nickel alloys. They have a modest 28% of their average alloy composition in common, which, by itself, doesn't mean much. There are 19 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 S35140 stainless steel and the bottom bar is AWS BNi-8.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
180
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 78
67
Tensile Strength: Ultimate (UTS), MPa 690
570

Thermal Properties

Latent Heat of Fusion, J/g 300
390
Melting Completion (Liquidus), °C 1420
1010
Melting Onset (Solidus), °C 1370
980
Specific Heat Capacity, J/kg-K 470
480
Thermal Expansion, µm/m-K 16
13

Otherwise Unclassified Properties

Base Metal Price, % relative 31
46
Density, g/cm3 8.0
7.9
Embodied Carbon, kg CO2/kg material 5.5
8.2
Embodied Energy, MJ/kg 78
120
Embodied Water, L/kg 190
220

Common Calculations

Stiffness to Weight: Axial, points 14
12
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 24
20
Strength to Weight: Bending, points 22
19
Thermal Shock Resistance, points 16
17

Alloy Composition

Aluminum (Al), % 0
0 to 0.050
Carbon (C), % 0 to 0.1
0 to 0.060
Chromium (Cr), % 20 to 22
0
Cobalt (Co), % 0
0 to 0.1
Copper (Cu), % 0
4.0 to 5.0
Iron (Fe), % 44.1 to 52.7
0
Manganese (Mn), % 1.0 to 3.0
21.5 to 24.5
Molybdenum (Mo), % 1.0 to 2.0
0
Nickel (Ni), % 25 to 27
61.6 to 68.5
Niobium (Nb), % 0.25 to 0.75
0
Nitrogen (N), % 0.080 to 0.2
0
Phosphorus (P), % 0 to 0.045
0 to 0.020
Selenium (Se), % 0
0 to 0.0050
Silicon (Si), % 0 to 0.75
6.0 to 8.0
Sulfur (S), % 0 to 0.030
0 to 0.020
Titanium (Ti), % 0
0 to 0.050
Zirconium (Zr), % 0
0 to 0.050
Residuals, % 0
0 to 0.5