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AWS BNi-4 vs. EN 1.7729 Steel

AWS BNi-4 belongs to the nickel alloys classification, while EN 1.7729 steel belongs to the iron alloys. There are 19 material properties with values for both materials. Properties with values for just one material (16, in this case) are not shown.

For each property being compared, the top bar is AWS BNi-4 and the bottom bar is EN 1.7729 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 180
190
Poisson's Ratio 0.31
0.29
Shear Modulus, GPa 67
73
Tensile Strength: Ultimate (UTS), MPa 430
910

Thermal Properties

Latent Heat of Fusion, J/g 340
250
Melting Completion (Liquidus), °C 1070
1470
Melting Onset (Solidus), °C 980
1430
Specific Heat Capacity, J/kg-K 470
470
Thermal Expansion, µm/m-K 11
13

Otherwise Unclassified Properties

Base Metal Price, % relative 60
3.8
Density, g/cm3 8.5
7.8
Embodied Carbon, kg CO2/kg material 10
3.3
Embodied Energy, MJ/kg 140
49
Embodied Water, L/kg 220
59

Common Calculations

Stiffness to Weight: Axial, points 12
13
Stiffness to Weight: Bending, points 22
24
Strength to Weight: Axial, points 14
32
Strength to Weight: Bending, points 15
27
Thermal Shock Resistance, points 16
27

Alloy Composition

Aluminum (Al), % 0 to 0.050
0.015 to 0.080
Arsenic (As), % 0
0 to 0.020
Boron (B), % 1.5 to 2.2
0.0010 to 0.010
Carbon (C), % 0 to 0.060
0.17 to 0.23
Chromium (Cr), % 0
0.9 to 1.2
Cobalt (Co), % 0 to 0.1
0
Copper (Cu), % 0
0 to 0.2
Iron (Fe), % 0 to 1.5
94.8 to 97
Manganese (Mn), % 0
0.35 to 0.75
Molybdenum (Mo), % 0
0.9 to 1.1
Nickel (Ni), % 91.4 to 95.5
0 to 0.2
Phosphorus (P), % 0 to 0.020
0 to 0.020
Selenium (Se), % 0 to 0.0050
0
Silicon (Si), % 3.0 to 4.0
0 to 0.4
Sulfur (S), % 0 to 0.020
0 to 0.015
Tin (Sn), % 0
0 to 0.020
Titanium (Ti), % 0 to 0.050
0.070 to 0.15
Vanadium (V), % 0
0.6 to 0.8
Zirconium (Zr), % 0 to 0.050
0
Residuals, % 0 to 0.5
0