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AWS BMg-1 vs. AWS BAu-1

AWS BMg-1 belongs to the magnesium alloys classification, while AWS BAu-1 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 AWS BMg-1 and the bottom bar is AWS BAu-1.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 47
110
Poisson's Ratio 0.29
0.37
Shear Modulus, GPa 18
40
Tensile Strength: Ultimate (UTS), MPa 180
210

Thermal Properties

Brazing Temperature, °C 600 to 630
1020 to 1090
Latent Heat of Fusion, J/g 350
150
Melting Completion (Liquidus), °C 600
1020
Melting Onset (Solidus), °C 440
990
Specific Heat Capacity, J/kg-K 980
290
Thermal Expansion, µm/m-K 26
16

Otherwise Unclassified Properties

Density, g/cm3 1.8
13

Common Calculations

Stiffness to Weight: Axial, points 14
4.7
Stiffness to Weight: Bending, points 66
12
Strength to Weight: Axial, points 27
4.5
Strength to Weight: Bending, points 39
6.1
Thermal Shock Resistance, points 10
8.5

Alloy Composition


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Aluminum (Al), % 8.3 to 9.7
0
Beryllium (Be), % 0.00020 to 0.00080
0
Copper (Cu), % 0 to 0.050
61.9 to 63
Gold (Au), % 0
37 to 38
Iron (Fe), % 0 to 0.0050
0
Magnesium (Mg), % 86.1 to 89.8
0
Manganese (Mn), % 0.15 to 1.5
0
Nickel (Ni), % 0 to 0.0050
0
Silicon (Si), % 0 to 0.050
0
Zinc (Zn), % 1.7 to 2.3
0
Residuals, % 0 to 0.3
0 to 0.15