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AWS BMg-1 vs. C55180 Copper

AWS BMg-1 belongs to the magnesium alloys classification, while C55180 copper 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 C55180 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 47
110
Elongation at Break, % 3.8
20
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 18
41
Tensile Strength: Ultimate (UTS), MPa 180
200
Tensile Strength: Yield (Proof), MPa 110
100

Thermal Properties

Brazing Temperature, °C 600 to 630
790 to 930
Latent Heat of Fusion, J/g 350
200
Maximum Temperature: Mechanical, °C 130
200
Melting Completion (Liquidus), °C 600
920
Melting Onset (Solidus), °C 440
710
Specific Heat Capacity, J/kg-K 980
400
Thermal Conductivity, W/m-K 76
200
Thermal Expansion, µm/m-K 26
17

Otherwise Unclassified Properties

Base Metal Price, % relative 12
29
Density, g/cm3 1.8
8.6
Embodied Carbon, kg CO2/kg material 22
2.5
Embodied Energy, MJ/kg 160
39
Embodied Water, L/kg 980
290

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.9
34
Resilience: Unit (Modulus of Resilience), kJ/m3 120
48
Stiffness to Weight: Axial, points 14
7.1
Stiffness to Weight: Bending, points 66
18
Strength to Weight: Axial, points 27
6.4
Strength to Weight: Bending, points 39
8.8
Thermal Diffusivity, mm2/s 43
56
Thermal Shock Resistance, points 10
7.9

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
94.7 to 95.2
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
Phosphorus (P), % 0
4.8 to 5.2
Silicon (Si), % 0 to 0.050
0
Zinc (Zn), % 1.7 to 2.3
0
Residuals, % 0 to 0.3
0 to 0.15