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AWS E3155 vs. AWS BNi-2

AWS E3155 belongs to the iron alloys classification, while AWS BNi-2 belongs to the nickel alloys. They have a modest 31% 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 E3155 and the bottom bar is AWS BNi-2.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
180
Poisson's Ratio 0.29
0.3
Shear Modulus, GPa 81
68
Tensile Strength: Ultimate (UTS), MPa 770
440

Thermal Properties

Latent Heat of Fusion, J/g 310
360
Melting Completion (Liquidus), °C 1460
1000
Melting Onset (Solidus), °C 1410
970
Specific Heat Capacity, J/kg-K 450
490
Thermal Expansion, µm/m-K 13
11

Otherwise Unclassified Properties

Base Metal Price, % relative 70
55
Density, g/cm3 8.4
8.2
Embodied Carbon, kg CO2/kg material 7.7
9.3
Embodied Energy, MJ/kg 110
130
Embodied Water, L/kg 300
230

Common Calculations

Stiffness to Weight: Axial, points 14
12
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 26
15
Strength to Weight: Bending, points 22
16
Thermal Shock Resistance, points 20
16

Alloy Composition

Aluminum (Al), % 0
0 to 0.050
Boron (B), % 0
2.8 to 3.5
Carbon (C), % 0 to 0.1
0 to 0.060
Chromium (Cr), % 20 to 22.5
6.0 to 8.0
Cobalt (Co), % 18.5 to 21
0 to 0.1
Copper (Cu), % 0 to 0.75
0
Iron (Fe), % 23.3 to 36.3
2.5 to 3.5
Manganese (Mn), % 1.0 to 2.5
0
Molybdenum (Mo), % 2.5 to 3.5
0
Nickel (Ni), % 19 to 21
79.1 to 84.8
Niobium (Nb), % 0.75 to 1.3
0
Phosphorus (P), % 0 to 0.040
0 to 0.020
Selenium (Se), % 0
0 to 0.0050
Silicon (Si), % 0 to 1.0
4.0 to 5.0
Sulfur (S), % 0 to 0.030
0 to 0.020
Titanium (Ti), % 0
0 to 0.050
Tungsten (W), % 2.0 to 3.0
0
Zirconium (Zr), % 0
0 to 0.050
Residuals, % 0
0 to 0.5