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AWS BNi-1a vs. S45503 Stainless Steel

AWS BNi-1a belongs to the nickel alloys classification, while S45503 stainless steel belongs to the iron alloys. They have a modest 25% 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-1a and the bottom bar is S45503 stainless 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
1610 to 1850

Thermal Properties

Latent Heat of Fusion, J/g 370
270
Melting Completion (Liquidus), °C 1080
1440
Melting Onset (Solidus), °C 980
1400
Specific Heat Capacity, J/kg-K 500
470
Thermal Expansion, µm/m-K 12
11

Otherwise Unclassified Properties

Base Metal Price, % relative 55
15
Density, g/cm3 8.0
7.9
Embodied Carbon, kg CO2/kg material 8.8
3.4
Embodied Energy, MJ/kg 120
48
Embodied Water, L/kg 240
120

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 16
57 to 65
Strength to Weight: Bending, points 16
39 to 43
Thermal Shock Resistance, points 15
56 to 64

Alloy Composition

Aluminum (Al), % 0 to 0.050
0
Boron (B), % 2.8 to 3.5
0
Carbon (C), % 0 to 0.060
0 to 0.010
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), % 4.0 to 5.0
72.4 to 78.9
Manganese (Mn), % 0
0 to 0.5
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 70.6 to 76.3
7.5 to 9.5
Niobium (Nb), % 0
0.1 to 0.5
Phosphorus (P), % 0 to 0.020
0 to 0.010
Selenium (Se), % 0 to 0.0050
0
Silicon (Si), % 4.0 to 5.0
0 to 0.2
Sulfur (S), % 0 to 0.020
0 to 0.010
Titanium (Ti), % 0 to 0.050
1.0 to 1.4
Zirconium (Zr), % 0 to 0.050
0
Residuals, % 0 to 0.5
0