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4047 Aluminum vs. AWS BCo-1

4047 aluminum belongs to the aluminum alloys classification, while AWS BCo-1 belongs to the cobalt alloys. There are 19 material properties with values for both materials. Properties with values for just one material (12, 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 4047 aluminum and the bottom bar is AWS BCo-1.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 72
200
Poisson's Ratio 0.33
0.3
Shear Modulus, GPa 27
78
Tensile Strength: Ultimate (UTS), MPa 120
700

Thermal Properties

Brazing Temperature, °C 580 to 600
1150 to 1230
Latent Heat of Fusion, J/g 570
420
Melting Completion (Liquidus), °C 580
1150
Melting Onset (Solidus), °C 580
1120
Specific Heat Capacity, J/kg-K 900
480
Thermal Expansion, µm/m-K 21
12

Otherwise Unclassified Properties

Density, g/cm3 2.5
8.1
Embodied Carbon, kg CO2/kg material 7.7
8.0
Embodied Energy, MJ/kg 140
110
Embodied Water, L/kg 1050
430

Common Calculations

Stiffness to Weight: Axial, points 16
14
Stiffness to Weight: Bending, points 55
24
Strength to Weight: Axial, points 13
24
Strength to Weight: Bending, points 21
22
Thermal Shock Resistance, points 5.6
21

Alloy Composition

Aluminum (Al), % 85.3 to 89
0 to 0.050
Boron (B), % 0
0.7 to 0.9
Carbon (C), % 0
0.35 to 0.45
Chromium (Cr), % 0
18 to 20
Cobalt (Co), % 0
46 to 54
Copper (Cu), % 0 to 0.3
0
Iron (Fe), % 0 to 0.8
0 to 1.0
Magnesium (Mg), % 0 to 0.1
0
Manganese (Mn), % 0 to 0.15
0
Nickel (Ni), % 0
16 to 18
Phosphorus (P), % 0
0 to 0.020
Selenium (Se), % 0
0 to 0.0050
Silicon (Si), % 11 to 13
7.5 to 8.5
Sulfur (S), % 0
0 to 0.020
Titanium (Ti), % 0
0 to 0.050
Tungsten (W), % 0
3.5 to 4.5
Zinc (Zn), % 0 to 0.2
0
Zirconium (Zr), % 0
0 to 0.050
Residuals, % 0
0 to 0.5