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AWS BNi-4 vs. Ductile Cast Iron

AWS BNi-4 belongs to the nickel alloys classification, while ductile cast iron belongs to the iron 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 AWS BNi-4 and the bottom bar is ductile cast iron.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 180
170 to 180
Poisson's Ratio 0.31
0.28 to 0.31
Shear Modulus, GPa 67
64 to 70
Tensile Strength: Ultimate (UTS), MPa 430
460 to 920

Thermal Properties

Latent Heat of Fusion, J/g 340
270
Melting Completion (Liquidus), °C 1070
1160
Melting Onset (Solidus), °C 980
1120
Specific Heat Capacity, J/kg-K 470
490
Thermal Expansion, µm/m-K 11
11

Otherwise Unclassified Properties

Base Metal Price, % relative 60
1.9
Density, g/cm3 8.5
7.1 to 7.5
Embodied Carbon, kg CO2/kg material 10
1.5
Embodied Energy, MJ/kg 140
21
Embodied Water, L/kg 220
43

Common Calculations

Stiffness to Weight: Axial, points 12
12 to 14
Stiffness to Weight: Bending, points 22
24 to 26
Strength to Weight: Axial, points 14
17 to 35
Strength to Weight: Bending, points 15
18 to 29
Thermal Shock Resistance, points 16
17 to 35

Alloy Composition

Aluminum (Al), % 0 to 0.050
0
Boron (B), % 1.5 to 2.2
0
Carbon (C), % 0 to 0.060
3.0 to 3.5
Cobalt (Co), % 0 to 0.1
0
Iron (Fe), % 0 to 1.5
93.7 to 95.5
Nickel (Ni), % 91.4 to 95.5
0
Phosphorus (P), % 0 to 0.020
0 to 0.080
Selenium (Se), % 0 to 0.0050
0
Silicon (Si), % 3.0 to 4.0
1.5 to 2.8
Sulfur (S), % 0 to 0.020
0
Titanium (Ti), % 0 to 0.050
0
Zirconium (Zr), % 0 to 0.050
0
Residuals, % 0 to 0.5
0