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AWS BNi-7 vs. AWS E3155

AWS BNi-7 belongs to the nickel alloys classification, while AWS E3155 belongs to the iron alloys. They have a modest 34% 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 (5, in this case) are not shown.

For each property being compared, the top bar is AWS BNi-7 and the bottom bar is AWS E3155.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 170
210
Poisson's Ratio 0.3
0.29
Shear Modulus, GPa 67
81
Tensile Strength: Ultimate (UTS), MPa 550
770

Thermal Properties

Latent Heat of Fusion, J/g 280
310
Melting Completion (Liquidus), °C 890
1460
Melting Onset (Solidus), °C 890
1410
Specific Heat Capacity, J/kg-K 490
450
Thermal Expansion, µm/m-K 11
13

Otherwise Unclassified Properties

Base Metal Price, % relative 55
70
Density, g/cm3 8.0
8.4
Embodied Carbon, kg CO2/kg material 8.8
7.7
Embodied Energy, MJ/kg 120
110
Embodied Water, L/kg 240
300

Common Calculations

Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 19
26
Strength to Weight: Bending, points 19
22
Thermal Shock Resistance, points 21
20

Alloy Composition

Aluminum (Al), % 0 to 0.050
0
Boron (B), % 0 to 0.010
0
Carbon (C), % 0 to 0.060
0 to 0.1
Chromium (Cr), % 13 to 15
20 to 22.5
Cobalt (Co), % 0 to 0.1
18.5 to 21
Copper (Cu), % 0
0 to 0.75
Iron (Fe), % 0 to 0.2
23.3 to 36.3
Manganese (Mn), % 0 to 0.040
1.0 to 2.5
Molybdenum (Mo), % 0
2.5 to 3.5
Nickel (Ni), % 73.3 to 77.3
19 to 21
Niobium (Nb), % 0
0.75 to 1.3
Phosphorus (P), % 9.7 to 10.5
0 to 0.040
Selenium (Se), % 0 to 0.0050
0
Silicon (Si), % 0 to 0.1
0 to 1.0
Sulfur (S), % 0 to 0.020
0 to 0.030
Titanium (Ti), % 0 to 0.050
0
Tungsten (W), % 0
2.0 to 3.0
Zirconium (Zr), % 0 to 0.050
0
Residuals, % 0 to 0.5
0