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AWS BNi-4 vs. S38100 Stainless Steel

AWS BNi-4 belongs to the nickel alloys classification, while S38100 stainless steel belongs to the iron alloys. They have a modest 21% 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 AWS BNi-4 and the bottom bar is S38100 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 180
200
Poisson's Ratio 0.31
0.28
Shear Modulus, GPa 67
76
Tensile Strength: Ultimate (UTS), MPa 430
580

Thermal Properties

Latent Heat of Fusion, J/g 340
320
Melting Completion (Liquidus), °C 1070
1400
Melting Onset (Solidus), °C 980
1350
Specific Heat Capacity, J/kg-K 470
480
Thermal Expansion, µm/m-K 11
16

Otherwise Unclassified Properties

Base Metal Price, % relative 60
20
Density, g/cm3 8.5
7.8
Embodied Carbon, kg CO2/kg material 10
3.8
Embodied Energy, MJ/kg 140
54
Embodied Water, L/kg 220
160

Common Calculations

Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 22
25
Strength to Weight: Axial, points 14
21
Strength to Weight: Bending, points 15
20
Thermal Shock Resistance, points 16
13

Alloy Composition

Aluminum (Al), % 0 to 0.050
0
Boron (B), % 1.5 to 2.2
0
Carbon (C), % 0 to 0.060
0 to 0.080
Chromium (Cr), % 0
17 to 19
Cobalt (Co), % 0 to 0.1
0
Iron (Fe), % 0 to 1.5
57.9 to 64
Manganese (Mn), % 0
0 to 2.0
Nickel (Ni), % 91.4 to 95.5
17.5 to 18.5
Phosphorus (P), % 0 to 0.020
0 to 0.030
Selenium (Se), % 0 to 0.0050
0
Silicon (Si), % 3.0 to 4.0
1.5 to 2.5
Sulfur (S), % 0 to 0.020
0 to 0.030
Titanium (Ti), % 0 to 0.050
0
Zirconium (Zr), % 0 to 0.050
0
Residuals, % 0 to 0.5
0