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4343 Aluminum vs. AWS BNi-7

4343 aluminum belongs to the aluminum alloys classification, while AWS BNi-7 belongs to the nickel 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 4343 aluminum and the bottom bar is AWS BNi-7.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
170
Poisson's Ratio 0.33
0.3
Shear Modulus, GPa 27
67
Tensile Strength: Ultimate (UTS), MPa 110
550

Thermal Properties

Brazing Temperature, °C 600 to 620
930 to 1090
Latent Heat of Fusion, J/g 510
280
Melting Completion (Liquidus), °C 620
890
Melting Onset (Solidus), °C 580
890
Specific Heat Capacity, J/kg-K 900
490
Thermal Expansion, µm/m-K 22
11

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
55
Density, g/cm3 2.6
8.0
Embodied Carbon, kg CO2/kg material 7.9
8.8
Embodied Energy, MJ/kg 150
120
Embodied Water, L/kg 1100
240

Common Calculations

Stiffness to Weight: Axial, points 15
12
Stiffness to Weight: Bending, points 53
23
Strength to Weight: Axial, points 12
19
Strength to Weight: Bending, points 20
19
Thermal Shock Resistance, points 5.2
21

Alloy Composition

Aluminum (Al), % 90.3 to 93.2
0 to 0.050
Boron (B), % 0
0 to 0.010
Carbon (C), % 0
0 to 0.060
Chromium (Cr), % 0
13 to 15
Cobalt (Co), % 0
0 to 0.1
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 0 to 0.8
0 to 0.2
Manganese (Mn), % 0 to 0.1
0 to 0.040
Nickel (Ni), % 0
73.3 to 77.3
Phosphorus (P), % 0
9.7 to 10.5
Selenium (Se), % 0
0 to 0.0050
Silicon (Si), % 6.8 to 8.2
0 to 0.1
Sulfur (S), % 0
0 to 0.020
Titanium (Ti), % 0
0 to 0.050
Zinc (Zn), % 0 to 0.2
0
Zirconium (Zr), % 0
0 to 0.050
Residuals, % 0
0 to 0.5