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AWS BNi-2 vs. EN 1.4458 Stainless Steel

AWS BNi-2 belongs to the nickel alloys classification, while EN 1.4458 stainless steel belongs to the iron alloys. They have a modest 39% 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-2 and the bottom bar is EN 1.4458 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 180
200
Poisson's Ratio 0.3
0.28
Shear Modulus, GPa 68
78
Tensile Strength: Ultimate (UTS), MPa 440
510

Thermal Properties

Latent Heat of Fusion, J/g 360
300
Melting Completion (Liquidus), °C 1000
1420
Melting Onset (Solidus), °C 970
1370
Specific Heat Capacity, J/kg-K 490
470
Thermal Expansion, µm/m-K 11
15

Otherwise Unclassified Properties

Base Metal Price, % relative 55
30
Density, g/cm3 8.2
8.0
Embodied Carbon, kg CO2/kg material 9.3
5.4
Embodied Energy, MJ/kg 130
75
Embodied Water, L/kg 230
200

Common Calculations

Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 15
17
Strength to Weight: Bending, points 16
18
Thermal Shock Resistance, points 16
12

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
19 to 22
Cobalt (Co), % 0 to 0.1
0
Copper (Cu), % 0
0 to 2.0
Iron (Fe), % 2.5 to 3.5
40.2 to 53
Manganese (Mn), % 0
0 to 2.0
Molybdenum (Mo), % 0
2.0 to 2.5
Nickel (Ni), % 79.1 to 84.8
26 to 30
Nitrogen (N), % 0
0 to 0.2
Phosphorus (P), % 0 to 0.020
0 to 0.035
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 0.025
Titanium (Ti), % 0 to 0.050
0
Zirconium (Zr), % 0 to 0.050
0
Residuals, % 0 to 0.5
0