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AWS BMg-1 vs. CC764S Brass

AWS BMg-1 belongs to the magnesium alloys classification, while CC764S 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 CC764S brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 47
110
Elongation at Break, % 3.8
15
Poisson's Ratio 0.29
0.31
Shear Modulus, GPa 18
41
Tensile Strength: Ultimate (UTS), MPa 180
680
Tensile Strength: Yield (Proof), MPa 110
290

Thermal Properties

Latent Heat of Fusion, J/g 350
180
Maximum Temperature: Mechanical, °C 130
130
Melting Completion (Liquidus), °C 600
850
Melting Onset (Solidus), °C 440
810
Specific Heat Capacity, J/kg-K 980
400
Thermal Conductivity, W/m-K 76
94
Thermal Expansion, µm/m-K 26
20

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
7.9
Embodied Carbon, kg CO2/kg material 22
2.9
Embodied Energy, MJ/kg 160
49
Embodied Water, L/kg 980
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.9
80
Resilience: Unit (Modulus of Resilience), kJ/m3 120
390
Stiffness to Weight: Axial, points 14
7.6
Stiffness to Weight: Bending, points 66
20
Strength to Weight: Axial, points 27
24
Strength to Weight: Bending, points 39
22
Thermal Diffusivity, mm2/s 43
30
Thermal Shock Resistance, points 10
22

Alloy Composition


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Aluminum (Al), % 8.3 to 9.7
1.0 to 3.0
Antimony (Sb), % 0
0 to 0.050
Beryllium (Be), % 0.00020 to 0.00080
0
Copper (Cu), % 0 to 0.050
52 to 66
Iron (Fe), % 0 to 0.0050
0.5 to 2.5
Lead (Pb), % 0
0 to 0.3
Magnesium (Mg), % 86.1 to 89.8
0
Manganese (Mn), % 0.15 to 1.5
0.3 to 4.0
Nickel (Ni), % 0 to 0.0050
0 to 3.0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.050
0 to 0.1
Tin (Sn), % 0
0 to 0.3
Zinc (Zn), % 1.7 to 2.3
20.7 to 50.2
Residuals, % 0 to 0.3
0