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AWS BNi-7 vs. S45500 Stainless Steel

AWS BNi-7 belongs to the nickel alloys classification, while S45500 stainless steel belongs to the iron alloys. They have a modest 21% 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 (12, in this case) are not shown.

For each property being compared, the top bar is AWS BNi-7 and the bottom bar is S45500 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 170
190
Poisson's Ratio 0.3
0.28
Shear Modulus, GPa 67
75
Tensile Strength: Ultimate (UTS), MPa 550
1370 to 1850

Thermal Properties

Latent Heat of Fusion, J/g 280
270
Melting Completion (Liquidus), °C 890
1440
Melting Onset (Solidus), °C 890
1400
Specific Heat Capacity, J/kg-K 490
470
Thermal Expansion, µm/m-K 11
11

Otherwise Unclassified Properties

Base Metal Price, % relative 55
17
Density, g/cm3 8.0
7.9
Embodied Carbon, kg CO2/kg material 8.8
3.8
Embodied Energy, MJ/kg 120
57
Embodied Water, L/kg 240
120

Common Calculations

Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 19
48 to 65
Strength to Weight: Bending, points 19
35 to 42
Thermal Shock Resistance, points 21
48 to 64

Alloy Composition

Aluminum (Al), % 0 to 0.050
0
Boron (B), % 0 to 0.010
0
Carbon (C), % 0 to 0.060
0 to 0.050
Chromium (Cr), % 13 to 15
11 to 12.5
Cobalt (Co), % 0 to 0.1
0
Copper (Cu), % 0
1.5 to 2.5
Iron (Fe), % 0 to 0.2
71.5 to 79.2
Manganese (Mn), % 0 to 0.040
0 to 0.5
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 73.3 to 77.3
7.5 to 9.5
Niobium (Nb), % 0
0 to 0.5
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 0.5
Sulfur (S), % 0 to 0.020
0 to 0.030
Tantalum (Ta), % 0
0 to 0.5
Titanium (Ti), % 0 to 0.050
0.8 to 1.4
Zirconium (Zr), % 0 to 0.050
0
Residuals, % 0 to 0.5
0