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AWS BNi-6 vs. S21800 Stainless Steel

AWS BNi-6 belongs to the nickel alloys classification, while S21800 stainless steel belongs to the iron alloys. There are 19 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

For each property being compared, the top bar is AWS BNi-6 and the bottom bar is S21800 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 160
190
Poisson's Ratio 0.31
0.28
Shear Modulus, GPa 62
75
Tensile Strength: Ultimate (UTS), MPa 450
740

Thermal Properties

Latent Heat of Fusion, J/g 260
340
Melting Completion (Liquidus), °C 880
1360
Melting Onset (Solidus), °C 880
1310
Specific Heat Capacity, J/kg-K 480
500
Thermal Expansion, µm/m-K 9.8
16

Otherwise Unclassified Properties

Base Metal Price, % relative 55
15
Density, g/cm3 8.2
7.5
Embodied Carbon, kg CO2/kg material 9.4
3.1
Embodied Energy, MJ/kg 130
45
Embodied Water, L/kg 210
150

Common Calculations

Stiffness to Weight: Axial, points 11
14
Stiffness to Weight: Bending, points 22
26
Strength to Weight: Axial, points 15
27
Strength to Weight: Bending, points 16
24
Thermal Shock Resistance, points 20
17

Alloy Composition

Aluminum (Al), % 0 to 0.050
0
Carbon (C), % 0 to 0.060
0 to 0.1
Chromium (Cr), % 0
16 to 18
Cobalt (Co), % 0 to 0.1
0
Iron (Fe), % 0
59.1 to 65.4
Manganese (Mn), % 0
7.0 to 9.0
Nickel (Ni), % 87.2 to 90
8.0 to 9.0
Nitrogen (N), % 0
0.080 to 0.18
Phosphorus (P), % 10 to 12
0 to 0.060
Selenium (Se), % 0 to 0.0050
0
Silicon (Si), % 0
3.5 to 4.5
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