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AWS BNi-4 vs. SAE-AISI 4340M Steel

AWS BNi-4 belongs to the nickel alloys classification, while SAE-AISI 4340M steel belongs to the iron alloys. There are 19 material properties with values for both materials. Properties with values for just one material (17, in this case) are not shown.

For each property being compared, the top bar is AWS BNi-4 and the bottom bar is SAE-AISI 4340M steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 180
190
Poisson's Ratio 0.31
0.29
Shear Modulus, GPa 67
72
Tensile Strength: Ultimate (UTS), MPa 430
2340

Thermal Properties

Latent Heat of Fusion, J/g 340
280
Melting Completion (Liquidus), °C 1070
1440
Melting Onset (Solidus), °C 980
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Expansion, µm/m-K 11
13

Otherwise Unclassified Properties

Base Metal Price, % relative 60
3.9
Density, g/cm3 8.5
7.8
Embodied Carbon, kg CO2/kg material 10
1.9
Embodied Energy, MJ/kg 140
26
Embodied Water, L/kg 220
55

Common Calculations

Stiffness to Weight: Axial, points 12
13
Stiffness to Weight: Bending, points 22
25
Strength to Weight: Axial, points 14
84
Strength to Weight: Bending, points 15
51
Thermal Shock Resistance, points 16
70

Alloy Composition

Aluminum (Al), % 0 to 0.050
0
Boron (B), % 1.5 to 2.2
0
Carbon (C), % 0 to 0.060
0.38 to 0.43
Chromium (Cr), % 0
0.7 to 1.0
Cobalt (Co), % 0 to 0.1
0
Iron (Fe), % 0 to 1.5
93.3 to 94.8
Manganese (Mn), % 0
0.65 to 0.9
Molybdenum (Mo), % 0
0.35 to 0.45
Nickel (Ni), % 91.4 to 95.5
1.7 to 2.0
Phosphorus (P), % 0 to 0.020
0 to 0.012
Selenium (Se), % 0 to 0.0050
0
Silicon (Si), % 3.0 to 4.0
1.5 to 1.8
Sulfur (S), % 0 to 0.020
0 to 0.012
Titanium (Ti), % 0 to 0.050
0
Vanadium (V), % 0
0.050 to 0.1
Zirconium (Zr), % 0 to 0.050
0
Residuals, % 0 to 0.5
0