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AWS BMg-1 vs. C84500 Brass

AWS BMg-1 belongs to the magnesium alloys classification, while C84500 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 C84500 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 47
100
Elongation at Break, % 3.8
28
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 18
39
Tensile Strength: Ultimate (UTS), MPa 180
240
Tensile Strength: Yield (Proof), MPa 110
97

Thermal Properties

Latent Heat of Fusion, J/g 350
180
Maximum Temperature: Mechanical, °C 130
150
Melting Completion (Liquidus), °C 600
980
Melting Onset (Solidus), °C 440
840
Specific Heat Capacity, J/kg-K 980
360
Thermal Conductivity, W/m-K 76
72
Thermal Expansion, µm/m-K 26
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
16
Electrical Conductivity: Equal Weight (Specific), % IACS 55
17

Otherwise Unclassified Properties

Base Metal Price, % relative 12
28
Density, g/cm3 1.8
8.7
Embodied Carbon, kg CO2/kg material 22
2.9
Embodied Energy, MJ/kg 160
47
Embodied Water, L/kg 980
340

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.9
54
Resilience: Unit (Modulus of Resilience), kJ/m3 120
45
Stiffness to Weight: Axial, points 14
6.6
Stiffness to Weight: Bending, points 66
18
Strength to Weight: Axial, points 27
7.7
Strength to Weight: Bending, points 39
9.8
Thermal Diffusivity, mm2/s 43
23
Thermal Shock Resistance, points 10
8.6

Alloy Composition


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Aluminum (Al), % 8.3 to 9.7
0 to 0.0050
Antimony (Sb), % 0
0 to 0.25
Beryllium (Be), % 0.00020 to 0.00080
0
Copper (Cu), % 0 to 0.050
77 to 79
Iron (Fe), % 0 to 0.0050
0 to 0.4
Lead (Pb), % 0
6.0 to 7.5
Magnesium (Mg), % 86.1 to 89.8
0
Manganese (Mn), % 0.15 to 1.5
0
Nickel (Ni), % 0 to 0.0050
0 to 1.0
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0 to 0.050
0 to 0.0050
Sulfur (S), % 0
0 to 0.080
Tin (Sn), % 0
2.0 to 4.0
Zinc (Zn), % 1.7 to 2.3
10 to 14
Residuals, % 0 to 0.3
0 to 0.7