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AWS BMg-1 vs. R05240 Alloy

AWS BMg-1 belongs to the magnesium alloys classification, while R05240 alloy belongs to the otherwise unclassified metals. There are 18 material properties with values for both materials. Properties with values for just one material (13, 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 R05240 alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 47
150
Elongation at Break, % 3.8
25
Poisson's Ratio 0.29
0.36
Shear Modulus, GPa 18
57
Tensile Strength: Ultimate (UTS), MPa 180
270
Tensile Strength: Yield (Proof), MPa 110
170

Thermal Properties

Latent Heat of Fusion, J/g 350
210
Specific Heat Capacity, J/kg-K 980
190
Thermal Expansion, µm/m-K 26
6.8

Otherwise Unclassified Properties

Density, g/cm3 1.8
14
Embodied Water, L/kg 980
460

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.9
59
Resilience: Unit (Modulus of Resilience), kJ/m3 120
90
Stiffness to Weight: Axial, points 14
6.3
Stiffness to Weight: Bending, points 66
13
Strength to Weight: Axial, points 27
5.4
Strength to Weight: Bending, points 39
6.8
Thermal Shock Resistance, points 10
18

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 0.010
Copper (Cu), % 0 to 0.050
0
Hydrogen (H), % 0
0 to 0.0015
Iron (Fe), % 0 to 0.0050
0 to 0.010
Magnesium (Mg), % 86.1 to 89.8
0
Manganese (Mn), % 0.15 to 1.5
0
Molybdenum (Mo), % 0
0 to 0.020
Nickel (Ni), % 0 to 0.0050
0 to 0.010
Niobium (Nb), % 0
35 to 42
Nitrogen (N), % 0
0 to 0.010
Oxygen (O), % 0
0 to 0.020
Silicon (Si), % 0 to 0.050
0 to 0.0050
Tantalum (Ta), % 0
57.9 to 65
Titanium (Ti), % 0
0 to 0.010
Tungsten (W), % 0
0 to 0.050
Zinc (Zn), % 1.7 to 2.3
0
Residuals, % 0 to 0.3
0