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AWS BMg-1 vs. C63800 Bronze

AWS BMg-1 belongs to the magnesium alloys classification, while C63800 bronze belongs to the copper alloys. There are 26 material properties with values for both materials. Properties with values for just one material (7, 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 C63800 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 47
110
Elongation at Break, % 3.8
7.9 to 41
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 18
43
Shear Strength, MPa 100
320 to 500
Tensile Strength: Ultimate (UTS), MPa 180
460 to 1010

Thermal Properties

Latent Heat of Fusion, J/g 350
240
Maximum Temperature: Mechanical, °C 130
200
Melting Completion (Liquidus), °C 600
1030
Melting Onset (Solidus), °C 440
1000
Specific Heat Capacity, J/kg-K 980
410
Thermal Conductivity, W/m-K 76
40
Thermal Expansion, µm/m-K 26
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
10
Electrical Conductivity: Equal Weight (Specific), % IACS 55
10

Otherwise Unclassified Properties

Base Metal Price, % relative 12
30
Density, g/cm3 1.8
8.6
Embodied Carbon, kg CO2/kg material 22
2.8
Embodied Energy, MJ/kg 160
45
Embodied Water, L/kg 980
330

Common Calculations

Stiffness to Weight: Axial, points 14
7.4
Stiffness to Weight: Bending, points 66
19
Strength to Weight: Axial, points 27
15 to 33
Strength to Weight: Bending, points 39
15 to 26
Thermal Diffusivity, mm2/s 43
11
Thermal Shock Resistance, points 10
17 to 36

Alloy Composition


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Aluminum (Al), % 8.3 to 9.7
2.5 to 3.1
Beryllium (Be), % 0.00020 to 0.00080
0
Cobalt (Co), % 0
0.25 to 0.55
Copper (Cu), % 0 to 0.050
92.4 to 95.8
Iron (Fe), % 0 to 0.0050
0 to 0.2
Lead (Pb), % 0
0 to 0.050
Magnesium (Mg), % 86.1 to 89.8
0
Manganese (Mn), % 0.15 to 1.5
0 to 0.1
Nickel (Ni), % 0 to 0.0050
0 to 0.2
Silicon (Si), % 0 to 0.050
1.5 to 2.1
Zinc (Zn), % 1.7 to 2.3
0 to 0.8
Residuals, % 0 to 0.3
0 to 0.5