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AWS BMg-1 vs. Type 2 Magnetic Alloy

AWS BMg-1 belongs to the magnesium alloys classification, while Type 2 magnetic alloy belongs to the iron alloys. There are 25 material properties with values for both materials. Properties with values for just one material (7, 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 Type 2 magnetic alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 47
190
Elongation at Break, % 3.8
2.0 to 38
Poisson's Ratio 0.29
0.3
Shear Modulus, GPa 18
72
Tensile Strength: Ultimate (UTS), MPa 180
510 to 910
Tensile Strength: Yield (Proof), MPa 110
260 to 870

Thermal Properties

Latent Heat of Fusion, J/g 350
270
Melting Completion (Liquidus), °C 600
1420
Melting Onset (Solidus), °C 440
1370
Specific Heat Capacity, J/kg-K 980
460
Thermal Expansion, µm/m-K 26
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
3.9
Electrical Conductivity: Equal Weight (Specific), % IACS 55
4.2

Otherwise Unclassified Properties

Base Metal Price, % relative 12
33
Density, g/cm3 1.8
8.4
Embodied Carbon, kg CO2/kg material 22
5.9
Embodied Energy, MJ/kg 160
81
Embodied Water, L/kg 980
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.9
18 to 160
Resilience: Unit (Modulus of Resilience), kJ/m3 120
170 to 2010
Stiffness to Weight: Axial, points 14
12
Stiffness to Weight: Bending, points 66
23
Strength to Weight: Axial, points 27
17 to 30
Strength to Weight: Bending, points 39
17 to 25
Thermal Shock Resistance, points 10
16 to 29

Alloy Composition


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Aluminum (Al), % 8.3 to 9.7
0
Beryllium (Be), % 0.00020 to 0.00080
0
Carbon (C), % 0
0 to 0.050
Chromium (Cr), % 0
0 to 0.3
Cobalt (Co), % 0
0 to 0.5
Copper (Cu), % 0 to 0.050
0 to 0.3
Iron (Fe), % 0 to 0.0050
48.2 to 53
Magnesium (Mg), % 86.1 to 89.8
0
Manganese (Mn), % 0.15 to 1.5
0 to 0.8
Molybdenum (Mo), % 0
0 to 0.3
Nickel (Ni), % 0 to 0.0050
47 to 49
Phosphorus (P), % 0
0 to 0.010
Silicon (Si), % 0 to 0.050
0 to 0.5
Sulfur (S), % 0
0 to 0.030
Zinc (Zn), % 1.7 to 2.3
0
Residuals, % 0 to 0.3
0