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ZK40A Magnesium vs. EN 1.8903 Steel

ZK40A magnesium belongs to the magnesium alloys classification, while EN 1.8903 steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (2, 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 1.8903 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
190
Elongation at Break, % 4.2
19
Fatigue Strength, MPa 190
330
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 17
73
Shear Strength, MPa 160
390
Tensile Strength: Ultimate (UTS), MPa 280
630
Tensile Strength: Yield (Proof), MPa 260
480

Thermal Properties

Latent Heat of Fusion, J/g 340
250
Maximum Temperature: Mechanical, °C 120
410
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
46
Thermal Expansion, µm/m-K 26
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 130
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 13
2.6
Density, g/cm3 1.8
7.8
Embodied Carbon, kg CO2/kg material 24
1.8
Embodied Energy, MJ/kg 160
24
Embodied Water, L/kg 950
51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 12
110
Resilience: Unit (Modulus of Resilience), kJ/m3 740
620
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 65
24
Strength to Weight: Axial, points 43
22
Strength to Weight: Bending, points 53
21
Thermal Diffusivity, mm2/s 62
12
Thermal Shock Resistance, points 17
18

Alloy Composition


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Aluminum (Al), % 0
0 to 0.015
Carbon (C), % 0
0 to 0.22
Chromium (Cr), % 0
0 to 0.35
Copper (Cu), % 0
0 to 0.6
Iron (Fe), % 0
95 to 99.05
Magnesium (Mg), % 94.2 to 96.1
0
Manganese (Mn), % 0
1.0 to 1.8
Molybdenum (Mo), % 0
0 to 0.13
Nickel (Ni), % 0
0 to 0.85
Niobium (Nb), % 0
0 to 0.060
Nitrogen (N), % 0
0 to 0.027
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0
0 to 0.65
Sulfur (S), % 0
0 to 0.025
Titanium (Ti), % 0
0 to 0.060
Vanadium (V), % 0
0 to 0.22
Zinc (Zn), % 3.5 to 4.5
0
Zirconium (Zr), % 0.45 to 1.0
0
Residuals, % 0 to 0.3
0