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AZ61A Magnesium vs. EN 1.4123 Stainless Steel

AZ61A magnesium belongs to the magnesium alloys classification, while EN 1.4123 stainless steel belongs to the iron alloys. There are 24 material properties with values for both materials. Properties with values for just one material (10, 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 1.4123 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 17
77
Tensile Strength: Ultimate (UTS), MPa 280
720 to 810

Thermal Properties

Latent Heat of Fusion, J/g 350
280
Maximum Temperature: Mechanical, °C 120
840
Melting Completion (Liquidus), °C 600
1450
Melting Onset (Solidus), °C 530
1410
Specific Heat Capacity, J/kg-K 990
480
Thermal Conductivity, W/m-K 79
23
Thermal Expansion, µm/m-K 27
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 12
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 62
2.8

Otherwise Unclassified Properties

Base Metal Price, % relative 12
10
Density, g/cm3 1.7
7.7
Embodied Carbon, kg CO2/kg material 23
4.2
Embodied Energy, MJ/kg 160
62
Embodied Water, L/kg 980
120

Common Calculations

Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 69
25
Strength to Weight: Axial, points 46
26 to 29
Strength to Weight: Bending, points 56
23 to 25
Thermal Diffusivity, mm2/s 47
6.3
Thermal Shock Resistance, points 17
26 to 29

Alloy Composition


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Aluminum (Al), % 5.5 to 7.2
0
Carbon (C), % 0
0.35 to 0.5
Chromium (Cr), % 0
14 to 16.5
Copper (Cu), % 0 to 0.050
0
Iron (Fe), % 0 to 0.0050
76.7 to 84.6
Magnesium (Mg), % 90.3 to 93.9
0
Manganese (Mn), % 0.15 to 0.5
0 to 1.0
Molybdenum (Mo), % 0
1.0 to 2.5
Nickel (Ni), % 0 to 0.0050
0 to 0.5
Nitrogen (N), % 0
0.1 to 0.3
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.1
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Vanadium (V), % 0
0 to 1.5
Zinc (Zn), % 0.4 to 1.5
0
Residuals, % 0 to 0.3
0