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AWS BMg-1 vs. 2618A Aluminum

AWS BMg-1 belongs to the magnesium alloys classification, while 2618A aluminum belongs to the aluminum alloys. There are 30 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is AWS BMg-1 and the bottom bar is 2618A aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 47
72
Elongation at Break, % 3.8
4.5
Fatigue Strength, MPa 72
120
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 18
27
Shear Strength, MPa 100
260
Tensile Strength: Ultimate (UTS), MPa 180
440
Tensile Strength: Yield (Proof), MPa 110
410

Thermal Properties

Latent Heat of Fusion, J/g 350
390
Maximum Temperature: Mechanical, °C 130
230
Melting Completion (Liquidus), °C 600
670
Melting Onset (Solidus), °C 440
560
Specific Heat Capacity, J/kg-K 980
880
Thermal Conductivity, W/m-K 76
150
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
11
Density, g/cm3 1.8
3.0
Embodied Carbon, kg CO2/kg material 22
8.4
Embodied Energy, MJ/kg 160
150
Embodied Water, L/kg 980
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.9
19
Resilience: Unit (Modulus of Resilience), kJ/m3 120
1180
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 66
47
Strength to Weight: Axial, points 27
41
Strength to Weight: Bending, points 39
44
Thermal Diffusivity, mm2/s 43
59
Thermal Shock Resistance, points 10
19

Alloy Composition


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Aluminum (Al), % 8.3 to 9.7
91.5 to 95.2
Beryllium (Be), % 0.00020 to 0.00080
0
Copper (Cu), % 0 to 0.050
1.8 to 2.7
Iron (Fe), % 0 to 0.0050
0.9 to 1.4
Magnesium (Mg), % 86.1 to 89.8
1.2 to 1.8
Manganese (Mn), % 0.15 to 1.5
0 to 0.25
Nickel (Ni), % 0 to 0.0050
0.8 to 1.4
Silicon (Si), % 0 to 0.050
0.15 to 0.25
Titanium (Ti), % 0
0 to 0.2
Zinc (Zn), % 1.7 to 2.3
0 to 0.15
Zirconium (Zr), % 0
0 to 0.25
Residuals, % 0 to 0.3
0 to 0.15