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AWS BNi-4 vs. EN 1.4971 Stainless Steel

AWS BNi-4 belongs to the nickel alloys classification, while EN 1.4971 stainless steel belongs to the iron alloys. They have a modest 21% 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 (13, in this case) are not shown.

For each property being compared, the top bar is AWS BNi-4 and the bottom bar is EN 1.4971 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 180
210
Poisson's Ratio 0.31
0.29
Shear Modulus, GPa 67
81
Tensile Strength: Ultimate (UTS), MPa 430
800

Thermal Properties

Latent Heat of Fusion, J/g 340
300
Melting Completion (Liquidus), °C 1070
1460
Melting Onset (Solidus), °C 980
1410
Specific Heat Capacity, J/kg-K 470
450
Thermal Expansion, µm/m-K 11
15

Otherwise Unclassified Properties

Base Metal Price, % relative 60
70
Density, g/cm3 8.5
8.4
Embodied Carbon, kg CO2/kg material 10
7.6
Embodied Energy, MJ/kg 140
110
Embodied Water, L/kg 220
300

Common Calculations

Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 22
24
Strength to Weight: Axial, points 14
26
Strength to Weight: Bending, points 15
23
Thermal Shock Resistance, points 16
19

Alloy Composition

Aluminum (Al), % 0 to 0.050
0
Boron (B), % 1.5 to 2.2
0
Carbon (C), % 0 to 0.060
0.080 to 0.16
Chromium (Cr), % 0
20 to 22.5
Cobalt (Co), % 0 to 0.1
18.5 to 21
Iron (Fe), % 0 to 1.5
24.3 to 37.1
Manganese (Mn), % 0
0 to 2.0
Molybdenum (Mo), % 0
2.5 to 3.5
Nickel (Ni), % 91.4 to 95.5
19 to 21
Niobium (Nb), % 0
0.75 to 1.3
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), % 3.0 to 4.0
0 to 1.0
Sulfur (S), % 0 to 0.020
0 to 0.015
Titanium (Ti), % 0 to 0.050
0
Tungsten (W), % 0
2.0 to 3.0
Zirconium (Zr), % 0 to 0.050
0
Residuals, % 0 to 0.5
0