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AWS BNi-4 vs. S33425 Stainless Steel

AWS BNi-4 belongs to the nickel alloys classification, while S33425 stainless steel belongs to the iron alloys. They have a modest 23% 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 (15, in this case) are not shown.

For each property being compared, the top bar is AWS BNi-4 and the bottom bar is S33425 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
79
Tensile Strength: Ultimate (UTS), MPa 430
580

Thermal Properties

Latent Heat of Fusion, J/g 340
300
Melting Completion (Liquidus), °C 1070
1430
Melting Onset (Solidus), °C 980
1380
Specific Heat Capacity, J/kg-K 470
470
Thermal Expansion, µm/m-K 11
16

Otherwise Unclassified Properties

Base Metal Price, % relative 60
27
Density, g/cm3 8.5
7.9
Embodied Carbon, kg CO2/kg material 10
5.1
Embodied Energy, MJ/kg 140
71
Embodied Water, L/kg 220
190

Common Calculations

Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 22
25
Strength to Weight: Axial, points 14
20
Strength to Weight: Bending, points 15
19
Thermal Shock Resistance, points 16
13

Alloy Composition

Aluminum (Al), % 0 to 0.050
0.15 to 0.6
Boron (B), % 1.5 to 2.2
0
Carbon (C), % 0 to 0.060
0 to 0.080
Chromium (Cr), % 0
21 to 23
Cobalt (Co), % 0 to 0.1
0
Iron (Fe), % 0 to 1.5
47.2 to 56.7
Manganese (Mn), % 0
0 to 1.5
Molybdenum (Mo), % 0
2.0 to 3.0
Nickel (Ni), % 91.4 to 95.5
20 to 23
Phosphorus (P), % 0 to 0.020
0 to 0.045
Selenium (Se), % 0 to 0.0050
0
Silicon (Si), % 3.0 to 4.0
0 to 1.0
Sulfur (S), % 0 to 0.020
0 to 0.020
Titanium (Ti), % 0 to 0.050
0.15 to 0.6
Zirconium (Zr), % 0 to 0.050
0
Residuals, % 0 to 0.5
0