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AWS BNi-2 vs. SAE-AISI 5140 Steel

AWS BNi-2 belongs to the nickel alloys classification, while SAE-AISI 5140 steel belongs to the iron alloys. There are 19 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

For each property being compared, the top bar is AWS BNi-2 and the bottom bar is SAE-AISI 5140 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 180
190
Poisson's Ratio 0.3
0.29
Shear Modulus, GPa 68
73
Tensile Strength: Ultimate (UTS), MPa 440
560 to 970

Thermal Properties

Latent Heat of Fusion, J/g 360
250
Melting Completion (Liquidus), °C 1000
1460
Melting Onset (Solidus), °C 970
1420
Specific Heat Capacity, J/kg-K 490
470
Thermal Expansion, µm/m-K 11
13

Otherwise Unclassified Properties

Base Metal Price, % relative 55
2.1
Density, g/cm3 8.2
7.8
Embodied Carbon, kg CO2/kg material 9.3
1.4
Embodied Energy, MJ/kg 130
19
Embodied Water, L/kg 230
49

Common Calculations

Stiffness to Weight: Axial, points 12
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 15
20 to 34
Strength to Weight: Bending, points 16
19 to 28
Thermal Shock Resistance, points 16
16 to 29

Alloy Composition

Aluminum (Al), % 0 to 0.050
0
Boron (B), % 2.8 to 3.5
0
Carbon (C), % 0 to 0.060
0.38 to 0.43
Chromium (Cr), % 6.0 to 8.0
0.7 to 0.9
Cobalt (Co), % 0 to 0.1
0
Iron (Fe), % 2.5 to 3.5
97.3 to 98.1
Manganese (Mn), % 0
0.7 to 0.9
Nickel (Ni), % 79.1 to 84.8
0
Phosphorus (P), % 0 to 0.020
0 to 0.035
Selenium (Se), % 0 to 0.0050
0
Silicon (Si), % 4.0 to 5.0
0.15 to 0.35
Sulfur (S), % 0 to 0.020
0 to 0.040
Titanium (Ti), % 0 to 0.050
0
Zirconium (Zr), % 0 to 0.050
0
Residuals, % 0 to 0.5
0