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AWS BMg-1 vs. A242.0 Aluminum

AWS BMg-1 belongs to the magnesium alloys classification, while A242.0 aluminum belongs to the aluminum 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.

For each property being compared, the top bar is AWS BMg-1 and the bottom bar is A242.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 47
73
Elongation at Break, % 3.8
1.6
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 18
27
Tensile Strength: Ultimate (UTS), MPa 180
220

Thermal Properties

Latent Heat of Fusion, J/g 350
390
Maximum Temperature: Mechanical, °C 130
210
Melting Completion (Liquidus), °C 600
680
Melting Onset (Solidus), °C 440
550
Specific Heat Capacity, J/kg-K 980
870
Thermal Conductivity, W/m-K 76
140
Thermal Expansion, µm/m-K 26
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
37
Electrical Conductivity: Equal Weight (Specific), % IACS 55
110

Otherwise Unclassified Properties

Base Metal Price, % relative 12
12
Density, g/cm3 1.8
3.1
Embodied Carbon, kg CO2/kg material 22
8.3
Embodied Energy, MJ/kg 160
150
Embodied Water, L/kg 980
1130

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 66
45
Strength to Weight: Axial, points 27
20
Strength to Weight: Bending, points 39
26
Thermal Diffusivity, mm2/s 43
52
Thermal Shock Resistance, points 10
9.3

Alloy Composition

Aluminum (Al), % 8.3 to 9.7
89.3 to 93.1
Beryllium (Be), % 0.00020 to 0.00080
0
Chromium (Cr), % 0
0.15 to 0.25
Copper (Cu), % 0 to 0.050
3.7 to 4.5
Iron (Fe), % 0 to 0.0050
0 to 0.8
Magnesium (Mg), % 86.1 to 89.8
1.2 to 1.7
Manganese (Mn), % 0.15 to 1.5
0 to 0.1
Nickel (Ni), % 0 to 0.0050
1.8 to 2.3
Silicon (Si), % 0 to 0.050
0 to 0.6
Titanium (Ti), % 0
0.070 to 0.2
Zinc (Zn), % 1.7 to 2.3
0 to 0.1
Residuals, % 0
0 to 0.15