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AWS BMg-1 vs. Zamak 5

AWS BMg-1 belongs to the magnesium alloys classification, while Zamak 5 belongs to the zinc alloys. There are 30 material properties with values for both materials. Properties with values for just one material (6, 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 Zamak 5.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 47
87
Elongation at Break, % 3.8
6.3
Fatigue Strength, MPa 72
56
Poisson's Ratio 0.29
0.25
Shear Modulus, GPa 18
33
Shear Strength, MPa 100
260
Tensile Strength: Ultimate (UTS), MPa 180
330
Tensile Strength: Yield (Proof), MPa 110
240

Thermal Properties

Latent Heat of Fusion, J/g 350
120
Maximum Temperature: Mechanical, °C 130
95
Melting Completion (Liquidus), °C 600
390
Melting Onset (Solidus), °C 440
380
Specific Heat Capacity, J/kg-K 980
410
Thermal Conductivity, W/m-K 76
110
Thermal Expansion, µm/m-K 26
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
26
Electrical Conductivity: Equal Weight (Specific), % IACS 55
37

Otherwise Unclassified Properties

Base Metal Price, % relative 12
12
Density, g/cm3 1.8
6.4
Embodied Carbon, kg CO2/kg material 22
3.0
Embodied Energy, MJ/kg 160
57
Embodied Water, L/kg 980
380

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.9
19
Resilience: Unit (Modulus of Resilience), kJ/m3 120
330
Stiffness to Weight: Axial, points 14
7.5
Stiffness to Weight: Bending, points 66
23
Strength to Weight: Axial, points 27
14
Strength to Weight: Bending, points 39
16
Thermal Diffusivity, mm2/s 43
42
Thermal Shock Resistance, points 10
9.9

Alloy Composition


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Aluminum (Al), % 8.3 to 9.7
3.5 to 4.3
Beryllium (Be), % 0.00020 to 0.00080
0
Cadmium (Cd), % 0
0 to 0.0050
Copper (Cu), % 0 to 0.050
0.7 to 1.3
Iron (Fe), % 0 to 0.0050
0 to 0.1
Lead (Pb), % 0
0 to 0.0050
Magnesium (Mg), % 86.1 to 89.8
0.025 to 0.080
Manganese (Mn), % 0.15 to 1.5
0
Nickel (Ni), % 0 to 0.0050
0 to 0.020
Silicon (Si), % 0 to 0.050
0 to 0.030
Tin (Sn), % 0
0 to 0.0030
Zinc (Zn), % 1.7 to 2.3
94.3 to 95.7
Residuals, % 0 to 0.3
0