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AZ61A Magnesium vs. SAE-AISI 1211 Steel

AZ61A magnesium belongs to the magnesium alloys classification, while SAE-AISI 1211 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 1211 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
190
Elongation at Break, % 11
11 to 29
Fatigue Strength, MPa 130
200 to 280
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 17
73
Shear Strength, MPa 150
280 to 350
Tensile Strength: Ultimate (UTS), MPa 280
430 to 580
Tensile Strength: Yield (Proof), MPa 170
260 to 460

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
61 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 310
180 to 550
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 69
24
Strength to Weight: Axial, points 46
15 to 21
Strength to Weight: Bending, points 56
16 to 20
Thermal Diffusivity, mm2/s 47
14
Thermal Shock Resistance, points 17
14 to 18

Alloy Composition


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Aluminum (Al), % 5.5 to 7.2
0
Carbon (C), % 0
0 to 0.13
Copper (Cu), % 0 to 0.050
0
Iron (Fe), % 0 to 0.0050
98.7 to 99.23
Magnesium (Mg), % 90.3 to 93.9
0
Manganese (Mn), % 0.15 to 0.5
0.6 to 0.9
Nickel (Ni), % 0 to 0.0050
0
Phosphorus (P), % 0
0.070 to 0.12
Silicon (Si), % 0 to 0.1
0
Sulfur (S), % 0
0.1 to 0.15
Zinc (Zn), % 0.4 to 1.5
0
Residuals, % 0 to 0.3
0