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AWS BNi-1a vs. EN 1.4931 Steel

AWS BNi-1a belongs to the nickel alloys classification, while EN 1.4931 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-1a and the bottom bar is EN 1.4931 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 70
76
Tensile Strength: Ultimate (UTS), MPa 450
810

Thermal Properties

Latent Heat of Fusion, J/g 370
270
Melting Completion (Liquidus), °C 1080
1460
Melting Onset (Solidus), °C 980
1420
Specific Heat Capacity, J/kg-K 500
470
Thermal Expansion, µm/m-K 12
14

Otherwise Unclassified Properties

Base Metal Price, % relative 55
8.5
Density, g/cm3 8.0
7.8
Embodied Carbon, kg CO2/kg material 8.8
2.9
Embodied Energy, MJ/kg 120
42
Embodied Water, L/kg 240
100

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 16
29
Strength to Weight: Bending, points 16
25
Thermal Shock Resistance, points 15
22

Alloy Composition

Aluminum (Al), % 0 to 0.050
0
Boron (B), % 2.8 to 3.5
0
Carbon (C), % 0 to 0.060
0.2 to 0.26
Chromium (Cr), % 13 to 15
11.3 to 12.2
Cobalt (Co), % 0 to 0.1
0
Iron (Fe), % 4.0 to 5.0
83.2 to 86.8
Manganese (Mn), % 0
0.5 to 0.8
Molybdenum (Mo), % 0
1.0 to 1.2
Nickel (Ni), % 70.6 to 76.3
0 to 1.0
Phosphorus (P), % 0 to 0.020
0 to 0.030
Selenium (Se), % 0 to 0.0050
0
Silicon (Si), % 4.0 to 5.0
0 to 0.4
Sulfur (S), % 0 to 0.020
0 to 0.020
Titanium (Ti), % 0 to 0.050
0
Tungsten (W), % 0
0 to 0.5
Vanadium (V), % 0
0.25 to 0.35
Zirconium (Zr), % 0 to 0.050
0
Residuals, % 0 to 0.5
0