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S31254 Stainless Steel vs. AWS BNi-6

S31254 stainless steel belongs to the iron alloys classification, while AWS BNi-6 belongs to the nickel alloys. There are 19 material properties with values for both materials. Properties with values for just one material (17, in this case) are not shown.

For each property being compared, the top bar is S31254 stainless steel and the bottom bar is AWS BNi-6.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
160
Poisson's Ratio 0.28
0.31
Shear Modulus, GPa 80
62
Tensile Strength: Ultimate (UTS), MPa 720
450

Thermal Properties

Latent Heat of Fusion, J/g 300
260
Melting Completion (Liquidus), °C 1460
880
Melting Onset (Solidus), °C 1420
880
Specific Heat Capacity, J/kg-K 460
480
Thermal Expansion, µm/m-K 17
9.8

Otherwise Unclassified Properties

Base Metal Price, % relative 28
55
Density, g/cm3 8.0
8.2
Embodied Carbon, kg CO2/kg material 5.5
9.4
Embodied Energy, MJ/kg 74
130
Embodied Water, L/kg 190
210

Common Calculations

Stiffness to Weight: Axial, points 14
11
Stiffness to Weight: Bending, points 24
22
Strength to Weight: Axial, points 25
15
Strength to Weight: Bending, points 22
16
Thermal Shock Resistance, points 15
20

Alloy Composition

Aluminum (Al), % 0
0 to 0.050
Carbon (C), % 0 to 0.020
0 to 0.060
Chromium (Cr), % 19.5 to 20.5
0
Cobalt (Co), % 0
0 to 0.1
Copper (Cu), % 0.5 to 1.0
0
Iron (Fe), % 51.4 to 56.3
0
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 6.0 to 6.5
0
Nickel (Ni), % 17.5 to 18.5
87.2 to 90
Nitrogen (N), % 0.18 to 0.22
0
Phosphorus (P), % 0 to 0.030
10 to 12
Selenium (Se), % 0
0 to 0.0050
Silicon (Si), % 0 to 0.8
0
Sulfur (S), % 0 to 0.010
0 to 0.020
Titanium (Ti), % 0
0 to 0.050
Zirconium (Zr), % 0
0 to 0.050
Residuals, % 0
0 to 0.5