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AWS BNi-2 vs. S40977 Stainless Steel

AWS BNi-2 belongs to the nickel alloys classification, while S40977 stainless steel belongs to the iron alloys. 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-2 and the bottom bar is S40977 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 180
190
Poisson's Ratio 0.3
0.28
Shear Modulus, GPa 68
76
Tensile Strength: Ultimate (UTS), MPa 440
510

Thermal Properties

Latent Heat of Fusion, J/g 360
270
Melting Completion (Liquidus), °C 1000
1440
Melting Onset (Solidus), °C 970
1400
Specific Heat Capacity, J/kg-K 490
480
Thermal Expansion, µm/m-K 11
10

Otherwise Unclassified Properties

Base Metal Price, % relative 55
6.5
Density, g/cm3 8.2
7.8
Embodied Carbon, kg CO2/kg material 9.3
1.9
Embodied Energy, MJ/kg 130
27
Embodied Water, L/kg 230
97

Common Calculations

Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 15
18
Strength to Weight: Bending, points 16
18
Thermal Shock Resistance, points 16
18

Alloy Composition

Aluminum (Al), % 0 to 0.050
0
Boron (B), % 2.8 to 3.5
0
Carbon (C), % 0 to 0.060
0 to 0.030
Chromium (Cr), % 6.0 to 8.0
10.5 to 12.5
Cobalt (Co), % 0 to 0.1
0
Iron (Fe), % 2.5 to 3.5
83.9 to 89.2
Manganese (Mn), % 0
0 to 1.5
Nickel (Ni), % 79.1 to 84.8
0.3 to 1.0
Nitrogen (N), % 0
0 to 0.030
Phosphorus (P), % 0 to 0.020
0 to 0.040
Selenium (Se), % 0 to 0.0050
0
Silicon (Si), % 4.0 to 5.0
0 to 1.0
Sulfur (S), % 0 to 0.020
0 to 0.015
Titanium (Ti), % 0 to 0.050
0
Zirconium (Zr), % 0 to 0.050
0
Residuals, % 0 to 0.5
0