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4047 Aluminum vs. AWS BVAu-7

4047 aluminum belongs to the aluminum alloys classification, while AWS BVAu-7 belongs to the otherwise unclassified metals. There are 16 material properties with values for both materials. Properties with values for just one material (15, 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 BVAu-7.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 72
130
Poisson's Ratio 0.33
0.38
Shear Modulus, GPa 27
45
Tensile Strength: Ultimate (UTS), MPa 120
200

Thermal Properties

Brazing Temperature, °C 580 to 600
1120 to 1150
Latent Heat of Fusion, J/g 570
140
Melting Completion (Liquidus), °C 580
1120
Melting Onset (Solidus), °C 580
1100
Specific Heat Capacity, J/kg-K 900
240
Thermal Expansion, µm/m-K 21
13

Otherwise Unclassified Properties

Density, g/cm3 2.5
15

Common Calculations

Stiffness to Weight: Axial, points 16
4.7
Stiffness to Weight: Bending, points 55
11
Strength to Weight: Axial, points 13
3.7
Strength to Weight: Bending, points 21
5.1
Thermal Shock Resistance, points 5.6
8.9

Alloy Composition

Aluminum (Al), % 85.3 to 89
0
Cadmium (Cd), % 0
0 to 0.0010
Carbon (C), % 0
0 to 0.0050
Cobalt (Co), % 0
0 to 0.060
Copper (Cu), % 0 to 0.3
0
Gold (Au), % 0
49.5 to 50.5
Iron (Fe), % 0 to 0.8
0
Lead (Pb), % 0
0 to 0.0020
Magnesium (Mg), % 0 to 0.1
0
Manganese (Mn), % 0 to 0.15
0
Nickel (Ni), % 0
24.5 to 25.5
Palladium (Pd), % 0
23.9 to 26
Phosphorus (P), % 0
0 to 0.0020
Silicon (Si), % 11 to 13
0
Zinc (Zn), % 0 to 0.2
0 to 0.0010
Residuals, % 0 to 0.15
0