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ZK40A Magnesium vs. EN 1.4823 Stainless Steel

ZK40A magnesium belongs to the magnesium alloys classification, while EN 1.4823 stainless steel belongs to the iron alloys. There are 29 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 ZK40A magnesium and the bottom bar is EN 1.4823 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
200
Elongation at Break, % 4.2
3.4
Fatigue Strength, MPa 190
130
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 17
79
Tensile Strength: Ultimate (UTS), MPa 280
620
Tensile Strength: Yield (Proof), MPa 260
290

Thermal Properties

Latent Heat of Fusion, J/g 340
320
Maximum Temperature: Mechanical, °C 120
1100
Melting Completion (Liquidus), °C 600
1400
Melting Onset (Solidus), °C 540
1360
Specific Heat Capacity, J/kg-K 970
490
Thermal Conductivity, W/m-K 110
17
Thermal Expansion, µm/m-K 26
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 130
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 13
16
Density, g/cm3 1.8
7.6
Embodied Carbon, kg CO2/kg material 24
3.0
Embodied Energy, MJ/kg 160
43
Embodied Water, L/kg 950
170

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 12
17
Resilience: Unit (Modulus of Resilience), kJ/m3 740
200
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 65
26
Strength to Weight: Axial, points 43
23
Strength to Weight: Bending, points 53
21
Thermal Diffusivity, mm2/s 62
4.5
Thermal Shock Resistance, points 17
17

Alloy Composition


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Carbon (C), % 0
0.3 to 0.5
Chromium (Cr), % 0
25 to 28
Iron (Fe), % 0
60.9 to 70.7
Magnesium (Mg), % 94.2 to 96.1
0
Manganese (Mn), % 0
0 to 1.5
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0
3.0 to 6.0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
1.0 to 2.5
Sulfur (S), % 0
0 to 0.030
Zinc (Zn), % 3.5 to 4.5
0
Zirconium (Zr), % 0.45 to 1.0
0
Residuals, % 0 to 0.3
0