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EN 1.7231 Steel vs. AWS BNi-1a

EN 1.7231 steel belongs to the iron alloys classification, while AWS BNi-1a belongs to the nickel alloys. 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 EN 1.7231 steel and the bottom bar is AWS BNi-1a.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
180
Poisson's Ratio 0.29
0.3
Shear Modulus, GPa 73
70
Tensile Strength: Ultimate (UTS), MPa 790 to 930
450

Thermal Properties

Latent Heat of Fusion, J/g 250
370
Melting Completion (Liquidus), °C 1460
1080
Melting Onset (Solidus), °C 1420
980
Specific Heat Capacity, J/kg-K 470
500
Thermal Expansion, µm/m-K 13
12

Otherwise Unclassified Properties

Base Metal Price, % relative 2.5
55
Density, g/cm3 7.8
8.0
Embodied Carbon, kg CO2/kg material 1.5
8.8
Embodied Energy, MJ/kg 20
120
Embodied Water, L/kg 51
240

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 28 to 33
16
Strength to Weight: Bending, points 24 to 27
16
Thermal Shock Resistance, points 23 to 27
15

Alloy Composition


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Aluminum (Al), % 0
0 to 0.050
Boron (B), % 0
2.8 to 3.5
Carbon (C), % 0.38 to 0.45
0 to 0.060
Chromium (Cr), % 0.8 to 1.2
13 to 15
Cobalt (Co), % 0
0 to 0.1
Iron (Fe), % 96.4 to 98.1
4.0 to 5.0
Manganese (Mn), % 0.6 to 1.0
0
Molybdenum (Mo), % 0.15 to 0.3
0
Nickel (Ni), % 0
70.6 to 76.3
Phosphorus (P), % 0 to 0.025
0 to 0.020
Selenium (Se), % 0
0 to 0.0050
Silicon (Si), % 0 to 0.6
4.0 to 5.0
Sulfur (S), % 0 to 0.030
0 to 0.020
Titanium (Ti), % 0
0 to 0.050
Zirconium (Zr), % 0
0 to 0.050
Residuals, % 0
0 to 0.5