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AWS BMg-1 vs. C21000 Brass

AWS BMg-1 belongs to the magnesium alloys classification, while C21000 brass belongs to the copper alloys. There are 29 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 C21000 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 47
110
Elongation at Break, % 3.8
2.9 to 50
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 18
43
Shear Strength, MPa 100
180 to 280
Tensile Strength: Ultimate (UTS), MPa 180
240 to 450
Tensile Strength: Yield (Proof), MPa 110
69 to 440

Thermal Properties

Latent Heat of Fusion, J/g 350
200
Maximum Temperature: Mechanical, °C 130
190
Melting Completion (Liquidus), °C 600
1070
Melting Onset (Solidus), °C 440
1050
Specific Heat Capacity, J/kg-K 980
390
Thermal Conductivity, W/m-K 76
230
Thermal Expansion, µm/m-K 26
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
56
Electrical Conductivity: Equal Weight (Specific), % IACS 55
57

Otherwise Unclassified Properties

Base Metal Price, % relative 12
30
Density, g/cm3 1.8
8.8
Embodied Carbon, kg CO2/kg material 22
2.6
Embodied Energy, MJ/kg 160
42
Embodied Water, L/kg 980
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.9
13 to 100
Resilience: Unit (Modulus of Resilience), kJ/m3 120
21 to 830
Stiffness to Weight: Axial, points 14
7.2
Stiffness to Weight: Bending, points 66
18
Strength to Weight: Axial, points 27
7.4 to 14
Strength to Weight: Bending, points 39
9.6 to 15
Thermal Diffusivity, mm2/s 43
69
Thermal Shock Resistance, points 10
8.1 to 15

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 to 96
Iron (Fe), % 0 to 0.0050
0 to 0.050
Lead (Pb), % 0
0 to 0.030
Magnesium (Mg), % 86.1 to 89.8
0
Manganese (Mn), % 0.15 to 1.5
0
Nickel (Ni), % 0 to 0.0050
0
Silicon (Si), % 0 to 0.050
0
Zinc (Zn), % 1.7 to 2.3
3.7 to 6.0
Residuals, % 0 to 0.3
0 to 0.2