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AZ61A Magnesium vs. EN 1.0449 Cast Steel

AZ61A magnesium belongs to the magnesium alloys classification, while EN 1.0449 cast steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (3, 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 AZ61A magnesium and the bottom bar is EN 1.0449 cast steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
190
Elongation at Break, % 11
28
Fatigue Strength, MPa 130
170
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 17
73
Tensile Strength: Ultimate (UTS), MPa 280
460
Tensile Strength: Yield (Proof), MPa 170
220

Thermal Properties

Latent Heat of Fusion, J/g 350
250
Maximum Temperature: Mechanical, °C 120
400
Melting Completion (Liquidus), °C 600
1460
Melting Onset (Solidus), °C 530
1420
Specific Heat Capacity, J/kg-K 990
470
Thermal Conductivity, W/m-K 79
52
Thermal Expansion, µm/m-K 27
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 12
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 62
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 12
1.8
Density, g/cm3 1.7
7.8
Embodied Carbon, kg CO2/kg material 23
1.4
Embodied Energy, MJ/kg 160
18
Embodied Water, L/kg 980
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 27
110
Resilience: Unit (Modulus of Resilience), kJ/m3 310
130
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 69
24
Strength to Weight: Axial, points 46
16
Strength to Weight: Bending, points 56
17
Thermal Diffusivity, mm2/s 47
14
Thermal Shock Resistance, points 17
14

Alloy Composition


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Aluminum (Al), % 5.5 to 7.2
0
Carbon (C), % 0
0 to 0.18
Copper (Cu), % 0 to 0.050
0
Iron (Fe), % 0 to 0.0050
98 to 100
Magnesium (Mg), % 90.3 to 93.9
0
Manganese (Mn), % 0.15 to 0.5
0 to 1.2
Nickel (Ni), % 0 to 0.0050
0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.1
0 to 0.6
Sulfur (S), % 0
0 to 0.025
Zinc (Zn), % 0.4 to 1.5
0
Residuals, % 0 to 0.3
0