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AZ61A Magnesium vs. SAE-AISI 1019 Steel

AZ61A magnesium belongs to the magnesium alloys classification, while SAE-AISI 1019 steel belongs to the iron alloys. There are 30 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 SAE-AISI 1019 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
190
Elongation at Break, % 11
17 to 29
Fatigue Strength, MPa 130
190 to 290
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 17
73
Shear Strength, MPa 150
300 to 320
Tensile Strength: Ultimate (UTS), MPa 280
470 to 520
Tensile Strength: Yield (Proof), MPa 170
250 to 430

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
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 62
8.0

Otherwise Unclassified Properties

Base Metal Price, % relative 12
1.8
Density, g/cm3 1.7
7.9
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
82 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 310
160 to 500
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 69
24
Strength to Weight: Axial, points 46
17 to 18
Strength to Weight: Bending, points 56
17 to 18
Thermal Diffusivity, mm2/s 47
14
Thermal Shock Resistance, points 17
15 to 16

Alloy Composition


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Aluminum (Al), % 5.5 to 7.2
0
Carbon (C), % 0
0.15 to 0.2
Copper (Cu), % 0 to 0.050
0
Iron (Fe), % 0 to 0.0050
98.7 to 99.15
Magnesium (Mg), % 90.3 to 93.9
0
Manganese (Mn), % 0.15 to 0.5
0.7 to 1.0
Nickel (Ni), % 0 to 0.0050
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.1
0
Sulfur (S), % 0
0 to 0.050
Zinc (Zn), % 0.4 to 1.5
0
Residuals, % 0 to 0.3
0