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AWS BMg-1 vs. 238.0 Aluminum

AWS BMg-1 belongs to the magnesium alloys classification, while 238.0 aluminum belongs to the aluminum alloys. There are 29 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is AWS BMg-1 and the bottom bar is 238.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 47
76
Elongation at Break, % 3.8
1.5
Fatigue Strength, MPa 72
110
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 18
28
Tensile Strength: Ultimate (UTS), MPa 180
210
Tensile Strength: Yield (Proof), MPa 110
170

Thermal Properties

Latent Heat of Fusion, J/g 350
430
Maximum Temperature: Mechanical, °C 130
170
Melting Completion (Liquidus), °C 600
600
Melting Onset (Solidus), °C 440
510
Specific Heat Capacity, J/kg-K 980
840
Thermal Conductivity, W/m-K 76
100
Thermal Expansion, µm/m-K 26
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
25
Electrical Conductivity: Equal Weight (Specific), % IACS 55
67

Otherwise Unclassified Properties

Base Metal Price, % relative 12
12
Density, g/cm3 1.8
3.4
Embodied Carbon, kg CO2/kg material 22
7.4
Embodied Energy, MJ/kg 160
140
Embodied Water, L/kg 980
1040

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.9
2.9
Resilience: Unit (Modulus of Resilience), kJ/m3 120
180
Stiffness to Weight: Axial, points 14
12
Stiffness to Weight: Bending, points 66
42
Strength to Weight: Axial, points 27
17
Strength to Weight: Bending, points 39
23
Thermal Diffusivity, mm2/s 43
37
Thermal Shock Resistance, points 10
9.1

Alloy Composition

Aluminum (Al), % 8.3 to 9.7
81.9 to 84.9
Beryllium (Be), % 0.00020 to 0.00080
0
Copper (Cu), % 0 to 0.050
9.5 to 10.5
Iron (Fe), % 0 to 0.0050
1.0 to 1.5
Magnesium (Mg), % 86.1 to 89.8
0 to 0.25
Manganese (Mn), % 0.15 to 1.5
0
Nickel (Ni), % 0 to 0.0050
0
Silicon (Si), % 0 to 0.050
3.6 to 4.4
Zinc (Zn), % 1.7 to 2.3
1.0 to 1.5
Residuals, % 0 to 0.3
0