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AWS BNi-1 vs. ACI-ASTM CA6N Steel

AWS BNi-1 belongs to the nickel alloys classification, while ACI-ASTM CA6N steel belongs to the iron alloys. They have a modest 24% of their average alloy composition in common, which, by itself, doesn't mean much. 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 CA6N 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
75
Tensile Strength: Ultimate (UTS), MPa 450
1080

Thermal Properties

Latent Heat of Fusion, J/g 360
280
Melting Completion (Liquidus), °C 1040
1440
Melting Onset (Solidus), °C 980
1400
Specific Heat Capacity, J/kg-K 500
480
Thermal Expansion, µm/m-K 12
9.9

Otherwise Unclassified Properties

Base Metal Price, % relative 55
11
Density, g/cm3 8.0
7.8
Embodied Carbon, kg CO2/kg material 8.8
2.5
Embodied Energy, MJ/kg 120
35
Embodied Water, L/kg 240
110

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 16
38
Strength to Weight: Bending, points 16
30
Thermal Shock Resistance, points 15
40

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 to 0.060
Chromium (Cr), % 13 to 15
10.5 to 12.5
Cobalt (Co), % 0 to 0.1
0
Iron (Fe), % 4.0 to 5.0
77.9 to 83.5
Manganese (Mn), % 0
0 to 0.5
Nickel (Ni), % 69.8 to 75.7
6.0 to 8.0
Phosphorus (P), % 0 to 0.020
0 to 0.020
Selenium (Se), % 0 to 0.0050
0
Silicon (Si), % 4.0 to 5.0
0 to 1.0
Sulfur (S), % 0 to 0.020
0 to 0.020
Titanium (Ti), % 0 to 0.050
0
Zirconium (Zr), % 0 to 0.050
0
Residuals, % 0 to 0.5
0