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AWS BMg-1 vs. SAE-AISI 50B60 Steel

AWS BMg-1 belongs to the magnesium alloys classification, while SAE-AISI 50B60 steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (2, 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 SAE-AISI 50B60 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 47
190
Elongation at Break, % 3.8
12 to 20
Fatigue Strength, MPa 72
240 to 330
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 18
72
Shear Strength, MPa 100
380
Tensile Strength: Ultimate (UTS), MPa 180
610 to 630
Tensile Strength: Yield (Proof), MPa 110
350 to 530

Thermal Properties

Latent Heat of Fusion, J/g 350
250
Maximum Temperature: Mechanical, °C 130
410
Melting Completion (Liquidus), °C 600
1450
Melting Onset (Solidus), °C 440
1410
Specific Heat Capacity, J/kg-K 980
470
Thermal Conductivity, W/m-K 76
45
Thermal Expansion, µm/m-K 26
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 55
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 12
2.0
Density, g/cm3 1.8
7.8
Embodied Carbon, kg CO2/kg material 22
1.4
Embodied Energy, MJ/kg 160
19
Embodied Water, L/kg 980
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.9
71 to 100
Resilience: Unit (Modulus of Resilience), kJ/m3 120
330 to 750
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 66
24
Strength to Weight: Axial, points 27
22 to 23
Strength to Weight: Bending, points 39
20 to 21
Thermal Diffusivity, mm2/s 43
12
Thermal Shock Resistance, points 10
20

Alloy Composition


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Aluminum (Al), % 8.3 to 9.7
0
Beryllium (Be), % 0.00020 to 0.00080
0
Boron (B), % 0
0.00050 to 0.0030
Carbon (C), % 0
0.56 to 0.64
Chromium (Cr), % 0
0.4 to 0.6
Copper (Cu), % 0 to 0.050
0
Iron (Fe), % 0 to 0.0050
97.3 to 98.1
Magnesium (Mg), % 86.1 to 89.8
0
Manganese (Mn), % 0.15 to 1.5
0.75 to 1.0
Nickel (Ni), % 0 to 0.0050
0
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0 to 0.050
0.15 to 0.35
Sulfur (S), % 0
0 to 0.040
Zinc (Zn), % 1.7 to 2.3
0
Residuals, % 0 to 0.3
0