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AWS BNi-1 vs. ACI-ASTM CA40 Steel

AWS BNi-1 belongs to the nickel alloys classification, while ACI-ASTM CA40 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-1 and the bottom bar is ACI-ASTM CA40 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 180
190
Poisson's Ratio 0.3
0.28
Shear Modulus, GPa 70
76
Tensile Strength: Ultimate (UTS), MPa 450
910

Thermal Properties

Latent Heat of Fusion, J/g 360
280
Melting Completion (Liquidus), °C 1040
1440
Melting Onset (Solidus), °C 980
1500
Specific Heat Capacity, J/kg-K 500
480
Thermal Expansion, µm/m-K 12
10

Otherwise Unclassified Properties

Base Metal Price, % relative 55
7.5
Density, g/cm3 8.0
7.7
Embodied Carbon, kg CO2/kg material 8.8
2.0
Embodied Energy, MJ/kg 120
28
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
33
Strength to Weight: Bending, points 16
27
Thermal Shock Resistance, points 15
33

Alloy Composition

Aluminum (Al), % 0 to 0.050
0
Boron (B), % 2.8 to 3.5
0
Carbon (C), % 0.6 to 0.9
0.2 to 0.4
Chromium (Cr), % 13 to 15
11.5 to 14
Cobalt (Co), % 0 to 0.1
0
Iron (Fe), % 4.0 to 5.0
81.5 to 88.3
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 69.8 to 75.7
0 to 1.0
Phosphorus (P), % 0 to 0.020
0 to 0.040
Selenium (Se), % 0 to 0.0050
0
Silicon (Si), % 4.0 to 5.0
0 to 1.5
Sulfur (S), % 0 to 0.020
0 to 0.040
Titanium (Ti), % 0 to 0.050
0
Zirconium (Zr), % 0 to 0.050
0
Residuals, % 0 to 0.5
0