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ZK40A Magnesium vs. EN 1.5511 Steel

ZK40A magnesium belongs to the magnesium alloys classification, while EN 1.5511 steel belongs to the iron alloys. There are 24 material properties with values for both materials. Properties with values for just one material (8, 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 ZK40A magnesium and the bottom bar is EN 1.5511 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 17
72
Tensile Strength: Ultimate (UTS), MPa 280
490 to 580

Thermal Properties

Latent Heat of Fusion, J/g 340
250
Maximum Temperature: Mechanical, °C 120
400
Melting Completion (Liquidus), °C 600
1460
Melting Onset (Solidus), °C 540
1420
Specific Heat Capacity, J/kg-K 970
470
Thermal Conductivity, W/m-K 110
51
Thermal Expansion, µm/m-K 26
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 130
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 13
1.8
Density, g/cm3 1.8
7.8
Embodied Carbon, kg CO2/kg material 24
1.4
Embodied Energy, MJ/kg 160
19
Embodied Water, L/kg 950
46

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 65
24
Strength to Weight: Axial, points 43
17 to 20
Strength to Weight: Bending, points 53
18 to 20
Thermal Diffusivity, mm2/s 62
14
Thermal Shock Resistance, points 17
15 to 17

Alloy Composition


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Aluminum (Al), % 0
0.020 to 0.060
Boron (B), % 0
0.00080 to 0.0050
Carbon (C), % 0
0.32 to 0.39
Iron (Fe), % 0
98.3 to 99.159
Magnesium (Mg), % 94.2 to 96.1
0
Manganese (Mn), % 0
0.5 to 0.8
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0
0 to 0.4
Sulfur (S), % 0
0 to 0.015
Zinc (Zn), % 3.5 to 4.5
0
Zirconium (Zr), % 0.45 to 1.0
0
Residuals, % 0 to 0.3
0