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AWS BNi-8 vs. EN 1.3940 Stainless Steel

AWS BNi-8 belongs to the nickel alloys classification, while EN 1.3940 stainless steel belongs to the iron alloys. There are 19 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.

For each property being compared, the top bar is AWS BNi-8 and the bottom bar is EN 1.3940 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 180
200
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 67
77
Tensile Strength: Ultimate (UTS), MPa 570
540

Thermal Properties

Latent Heat of Fusion, J/g 390
290
Melting Completion (Liquidus), °C 1010
1420
Melting Onset (Solidus), °C 980
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 13
12

Otherwise Unclassified Properties

Base Metal Price, % relative 46
17
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 8.2
3.3
Embodied Energy, MJ/kg 120
47
Embodied Water, L/kg 220
150

Common Calculations

Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 20
19
Strength to Weight: Bending, points 19
19
Thermal Shock Resistance, points 17
16

Alloy Composition

Aluminum (Al), % 0 to 0.050
0
Carbon (C), % 0 to 0.060
0 to 0.030
Chromium (Cr), % 0
16.5 to 18.5
Cobalt (Co), % 0 to 0.1
0
Copper (Cu), % 4.0 to 5.0
0
Iron (Fe), % 0
64.2 to 71.4
Manganese (Mn), % 21.5 to 24.5
0 to 2.0
Nickel (Ni), % 61.6 to 68.5
12 to 14
Nitrogen (N), % 0
0.1 to 0.2
Phosphorus (P), % 0 to 0.020
0 to 0.035
Selenium (Se), % 0 to 0.0050
0
Silicon (Si), % 6.0 to 8.0
0 to 1.0
Sulfur (S), % 0 to 0.020
0 to 0.020
Titanium (Ti), % 0 to 0.050
0
Zirconium (Zr), % 0 to 0.050
0
Residuals, % 0 to 0.5
0