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AWS BMg-1 vs. CC767S Brass

AWS BMg-1 belongs to the magnesium alloys classification, while CC767S brass belongs to the copper alloys. There are 28 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 CC767S brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 47
110
Elongation at Break, % 3.8
34
Poisson's Ratio 0.29
0.31
Shear Modulus, GPa 18
40
Tensile Strength: Ultimate (UTS), MPa 180
430
Tensile Strength: Yield (Proof), MPa 110
150

Thermal Properties

Latent Heat of Fusion, J/g 350
180
Maximum Temperature: Mechanical, °C 130
120
Melting Completion (Liquidus), °C 600
840
Melting Onset (Solidus), °C 440
790
Specific Heat Capacity, J/kg-K 980
390
Thermal Conductivity, W/m-K 76
110
Thermal Expansion, µm/m-K 26
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
32
Electrical Conductivity: Equal Weight (Specific), % IACS 55
36

Otherwise Unclassified Properties

Base Metal Price, % relative 12
23
Density, g/cm3 1.8
8.0
Embodied Carbon, kg CO2/kg material 22
2.7
Embodied Energy, MJ/kg 160
47
Embodied Water, L/kg 980
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.9
110
Resilience: Unit (Modulus of Resilience), kJ/m3 120
100
Stiffness to Weight: Axial, points 14
7.3
Stiffness to Weight: Bending, points 66
20
Strength to Weight: Axial, points 27
15
Strength to Weight: Bending, points 39
16
Thermal Diffusivity, mm2/s 43
34
Thermal Shock Resistance, points 10
14

Alloy Composition


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Aluminum (Al), % 8.3 to 9.7
0.1 to 0.8
Beryllium (Be), % 0.00020 to 0.00080
0
Copper (Cu), % 0 to 0.050
58 to 64
Iron (Fe), % 0 to 0.0050
0 to 0.5
Lead (Pb), % 0
0 to 0.1
Magnesium (Mg), % 86.1 to 89.8
0
Manganese (Mn), % 0.15 to 1.5
0 to 0.5
Nickel (Ni), % 0 to 0.0050
0 to 1.0
Silicon (Si), % 0 to 0.050
0 to 0.2
Tin (Sn), % 0
0 to 0.1
Zinc (Zn), % 1.7 to 2.3
32.8 to 41.9
Residuals, % 0 to 0.3
0