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AWS BNi-5a vs. EN 1.4421 Stainless Steel

AWS BNi-5a belongs to the nickel alloys classification, while EN 1.4421 stainless steel belongs to the iron alloys. They have a modest 22% 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 (14, in this case) are not shown.

For each property being compared, the top bar is AWS BNi-5a and the bottom bar is EN 1.4421 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 72
77
Tensile Strength: Ultimate (UTS), MPa 480
880 to 1100

Thermal Properties

Latent Heat of Fusion, J/g 420
280
Melting Completion (Liquidus), °C 1150
1440
Melting Onset (Solidus), °C 1070
1400
Specific Heat Capacity, J/kg-K 500
480
Thermal Expansion, µm/m-K 12
10

Otherwise Unclassified Properties

Base Metal Price, % relative 55
12
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 9.0
2.6
Embodied Energy, MJ/kg 130
36
Embodied Water, L/kg 260
130

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 17
31 to 39
Strength to Weight: Bending, points 17
26 to 30
Thermal Shock Resistance, points 15
31 to 39

Alloy Composition

Aluminum (Al), % 0 to 0.050
0
Boron (B), % 1.0 to 1.5
0
Carbon (C), % 0 to 0.1
0 to 0.060
Chromium (Cr), % 18.5 to 19.5
15.5 to 17.5
Cobalt (Co), % 0 to 0.1
0
Iron (Fe), % 0 to 0.5
74.4 to 80.5
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0
0 to 0.7
Nickel (Ni), % 70.1 to 73.5
4.0 to 5.5
Phosphorus (P), % 0 to 0.020
0 to 0.035
Selenium (Se), % 0 to 0.0050
0
Silicon (Si), % 7.0 to 7.5
0 to 0.8
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