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AWS BMg-1 vs. Grade FDSiCr Steel

AWS BMg-1 belongs to the magnesium alloys classification, while grade FDSiCr steel belongs to the iron alloys. There are 24 material properties with values for both materials. Properties with values for just one material (9, 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 grade FDSiCr steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 47
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 18
80
Tensile Strength: Ultimate (UTS), MPa 180
1930

Thermal Properties

Latent Heat of Fusion, J/g 350
270
Maximum Temperature: Mechanical, °C 130
410
Melting Completion (Liquidus), °C 600
1440
Melting Onset (Solidus), °C 440
1400
Specific Heat Capacity, J/kg-K 980
480
Thermal Conductivity, W/m-K 76
48
Thermal Expansion, µm/m-K 26
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 55
8.5

Otherwise Unclassified Properties

Base Metal Price, % relative 12
2.2
Density, g/cm3 1.8
7.7
Embodied Carbon, kg CO2/kg material 22
1.5
Embodied Energy, MJ/kg 160
20
Embodied Water, L/kg 980
48

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 66
25
Strength to Weight: Axial, points 27
69
Strength to Weight: Bending, points 39
44
Thermal Diffusivity, mm2/s 43
13
Thermal Shock Resistance, points 10
58

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
0.5 to 0.6
Chromium (Cr), % 0
0.5 to 0.8
Copper (Cu), % 0 to 0.050
0 to 0.12
Iron (Fe), % 0 to 0.0050
96.5 to 97.8
Magnesium (Mg), % 86.1 to 89.8
0
Manganese (Mn), % 0.15 to 1.5
0.5 to 0.9
Nickel (Ni), % 0 to 0.0050
0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.050
1.2 to 1.6
Sulfur (S), % 0
0 to 0.025
Zinc (Zn), % 1.7 to 2.3
0
Residuals, % 0 to 0.3
0