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AWS BMg-1 vs. C63020 Bronze

AWS BMg-1 belongs to the magnesium alloys classification, while C63020 bronze belongs to the copper alloys. There are 27 material properties with values for both materials. Properties with values for just one material (4, 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 C63020 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 47
120
Elongation at Break, % 3.8
6.8
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 18
44
Shear Strength, MPa 100
600
Tensile Strength: Ultimate (UTS), MPa 180
1020
Tensile Strength: Yield (Proof), MPa 110
740

Thermal Properties

Latent Heat of Fusion, J/g 350
230
Maximum Temperature: Mechanical, °C 130
230
Melting Completion (Liquidus), °C 600
1070
Melting Onset (Solidus), °C 440
1020
Specific Heat Capacity, J/kg-K 980
450
Thermal Conductivity, W/m-K 76
40
Thermal Expansion, µm/m-K 26
18

Otherwise Unclassified Properties

Base Metal Price, % relative 12
29
Density, g/cm3 1.8
8.2
Embodied Carbon, kg CO2/kg material 22
3.6
Embodied Energy, MJ/kg 160
58
Embodied Water, L/kg 980
390

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.9
63
Resilience: Unit (Modulus of Resilience), kJ/m3 120
2320
Stiffness to Weight: Axial, points 14
8.0
Stiffness to Weight: Bending, points 66
20
Strength to Weight: Axial, points 27
34
Strength to Weight: Bending, points 39
27
Thermal Diffusivity, mm2/s 43
11
Thermal Shock Resistance, points 10
35

Alloy Composition


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Aluminum (Al), % 8.3 to 9.7
10 to 11
Beryllium (Be), % 0.00020 to 0.00080
0
Chromium (Cr), % 0
0 to 0.050
Cobalt (Co), % 0
0 to 0.2
Copper (Cu), % 0 to 0.050
74.7 to 81.8
Iron (Fe), % 0 to 0.0050
4.0 to 5.5
Lead (Pb), % 0
0 to 0.030
Magnesium (Mg), % 86.1 to 89.8
0
Manganese (Mn), % 0.15 to 1.5
0 to 1.5
Nickel (Ni), % 0 to 0.0050
4.2 to 6.0
Silicon (Si), % 0 to 0.050
0
Tin (Sn), % 0
0 to 0.25
Zinc (Zn), % 1.7 to 2.3
0 to 0.3
Residuals, % 0 to 0.3
0 to 0.5