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EN 1.7233 Steel vs. ZK51A Magnesium

EN 1.7233 steel belongs to the iron alloys classification, while ZK51A magnesium belongs to the magnesium 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 EN 1.7233 steel and the bottom bar is ZK51A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
45
Elongation at Break, % 18 to 23
4.7
Fatigue Strength, MPa 270 to 530
62
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
18
Shear Strength, MPa 450 to 590
160
Tensile Strength: Ultimate (UTS), MPa 700 to 960
240
Tensile Strength: Yield (Proof), MPa 380 to 780
150

Thermal Properties

Latent Heat of Fusion, J/g 250
340
Maximum Temperature: Mechanical, °C 430
120
Melting Completion (Liquidus), °C 1460
640
Melting Onset (Solidus), °C 1420
550
Specific Heat Capacity, J/kg-K 470
970
Thermal Conductivity, W/m-K 39
110
Thermal Expansion, µm/m-K 13
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
28
Electrical Conductivity: Equal Weight (Specific), % IACS 8.5
140

Otherwise Unclassified Properties

Base Metal Price, % relative 3.0
13
Density, g/cm3 7.8
1.8
Embodied Carbon, kg CO2/kg material 1.6
24
Embodied Energy, MJ/kg 21
160
Embodied Water, L/kg 53
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110 to 200
10
Resilience: Unit (Modulus of Resilience), kJ/m3 380 to 1630
260
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
64
Strength to Weight: Axial, points 25 to 34
36
Strength to Weight: Bending, points 22 to 28
47
Thermal Diffusivity, mm2/s 11
61
Thermal Shock Resistance, points 21 to 28
15

Alloy Composition

Carbon (C), % 0.39 to 0.45
0
Chromium (Cr), % 1.2 to 1.5
0
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 96.2 to 97.5
0
Magnesium (Mg), % 0
93.1 to 95.9
Manganese (Mn), % 0.4 to 0.7
0
Molybdenum (Mo), % 0.5 to 0.7
0
Nickel (Ni), % 0
0 to 0.010
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0 to 0.4
0
Sulfur (S), % 0 to 0.035
0
Zinc (Zn), % 0
3.6 to 5.5
Zirconium (Zr), % 0
0.5 to 1.0
Residuals, % 0
0 to 0.3