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AZ31B-O Magnesium vs. Annealed Type 1 Magnetic Alloy

AZ31B-O magnesium belongs to the magnesium alloys classification, while annealed Type 1 magnetic alloy belongs to the iron alloys. There are 25 material properties with values for both materials. Properties with values for just one material (7, 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 AZ31B-O magnesium and the bottom bar is annealed Type 1 magnetic alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
190
Elongation at Break, % 12
38
Poisson's Ratio 0.29
0.3
Shear Modulus, GPa 17
72
Tensile Strength: Ultimate (UTS), MPa 240
500
Tensile Strength: Yield (Proof), MPa 120
220

Thermal Properties

Latent Heat of Fusion, J/g 350
270
Melting Completion (Liquidus), °C 600
1420
Melting Onset (Solidus), °C 600
1370
Specific Heat Capacity, J/kg-K 990
460
Thermal Expansion, µm/m-K 26
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 18
3.1
Electrical Conductivity: Equal Weight (Specific), % IACS 95
3.4

Otherwise Unclassified Properties

Base Metal Price, % relative 12
31
Density, g/cm3 1.7
8.3
Embodied Carbon, kg CO2/kg material 23
5.6
Embodied Energy, MJ/kg 160
77
Embodied Water, L/kg 970
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 25
150
Resilience: Unit (Modulus of Resilience), kJ/m3 170
130
Stiffness to Weight: Axial, points 15
12
Stiffness to Weight: Bending, points 70
23
Strength to Weight: Axial, points 39
17
Strength to Weight: Bending, points 50
17
Thermal Shock Resistance, points 14
16

Alloy Composition

Aluminum (Al), % 2.4 to 3.6
0
Calcium (Ca), % 0 to 0.040
0
Carbon (C), % 0
0 to 0.050
Chromium (Cr), % 0
0 to 0.3
Cobalt (Co), % 0
0 to 0.5
Copper (Cu), % 0 to 0.050
0 to 0.3
Iron (Fe), % 0 to 0.050
50.7 to 56.5
Magnesium (Mg), % 93.6 to 97.1
0
Manganese (Mn), % 0.050 to 1.0
0 to 0.8
Molybdenum (Mo), % 0
0 to 0.3
Nickel (Ni), % 0 to 0.0050
43.5 to 46.5
Phosphorus (P), % 0
0 to 0.010
Silicon (Si), % 0 to 0.1
0 to 0.5
Sulfur (S), % 0
0 to 0.030
Zinc (Zn), % 0.5 to 1.5
0
Residuals, % 0 to 0.3
0