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AWS BNi-6 vs. 4145 Aluminum

AWS BNi-6 belongs to the nickel alloys classification, while 4145 aluminum belongs to the aluminum alloys. There are 20 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is AWS BNi-6 and the bottom bar is 4145 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 160
73
Poisson's Ratio 0.31
0.33
Shear Modulus, GPa 62
28
Tensile Strength: Ultimate (UTS), MPa 450
120

Thermal Properties

Brazing Temperature, °C 930 to 1090
570 to 600
Latent Heat of Fusion, J/g 260
540
Melting Completion (Liquidus), °C 880
590
Melting Onset (Solidus), °C 880
520
Specific Heat Capacity, J/kg-K 480
880
Thermal Expansion, µm/m-K 9.8
21

Otherwise Unclassified Properties

Base Metal Price, % relative 55
10
Density, g/cm3 8.2
2.8
Embodied Carbon, kg CO2/kg material 9.4
7.6
Embodied Energy, MJ/kg 130
140
Embodied Water, L/kg 210
1040

Common Calculations

Stiffness to Weight: Axial, points 11
14
Stiffness to Weight: Bending, points 22
50
Strength to Weight: Axial, points 15
12
Strength to Weight: Bending, points 16
19
Thermal Shock Resistance, points 20
5.5

Alloy Composition

Aluminum (Al), % 0 to 0.050
83 to 87.4
Carbon (C), % 0 to 0.060
0
Chromium (Cr), % 0
0 to 0.15
Cobalt (Co), % 0 to 0.1
0
Copper (Cu), % 0
3.3 to 4.7
Iron (Fe), % 0
0 to 0.8
Magnesium (Mg), % 0
0 to 0.15
Manganese (Mn), % 0
0 to 0.15
Nickel (Ni), % 87.2 to 90
0
Phosphorus (P), % 10 to 12
0
Selenium (Se), % 0 to 0.0050
0
Silicon (Si), % 0
9.3 to 10.7
Sulfur (S), % 0 to 0.020
0
Titanium (Ti), % 0 to 0.050
0
Zinc (Zn), % 0
0 to 0.2
Zirconium (Zr), % 0 to 0.050
0
Residuals, % 0
0 to 0.15