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ZK40A Magnesium vs. SAE-AISI 9310 Steel

ZK40A magnesium belongs to the magnesium alloys classification, while SAE-AISI 9310 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 SAE-AISI 9310 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
190
Elongation at Break, % 4.2
17 to 19
Fatigue Strength, MPa 190
300 to 390
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 17
73
Shear Strength, MPa 160
510 to 570
Tensile Strength: Ultimate (UTS), MPa 280
820 to 910
Tensile Strength: Yield (Proof), MPa 260
450 to 570

Thermal Properties

Latent Heat of Fusion, J/g 340
250
Maximum Temperature: Mechanical, °C 120
440
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
48
Thermal Expansion, µm/m-K 26
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
7.7
Electrical Conductivity: Equal Weight (Specific), % IACS 130
8.9

Otherwise Unclassified Properties

Base Metal Price, % relative 13
4.4
Density, g/cm3 1.8
7.9
Embodied Carbon, kg CO2/kg material 24
1.8
Embodied Energy, MJ/kg 160
24
Embodied Water, L/kg 950
57

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 12
120 to 150
Resilience: Unit (Modulus of Resilience), kJ/m3 740
540 to 860
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 65
24
Strength to Weight: Axial, points 43
29 to 32
Strength to Weight: Bending, points 53
25 to 27
Thermal Diffusivity, mm2/s 62
13
Thermal Shock Resistance, points 17
24 to 27

Alloy Composition


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Carbon (C), % 0
0.080 to 0.13
Chromium (Cr), % 0
1.0 to 1.4
Iron (Fe), % 0
93.8 to 95.2
Magnesium (Mg), % 94.2 to 96.1
0
Manganese (Mn), % 0
0.45 to 0.65
Molybdenum (Mo), % 0
0.080 to 0.15
Nickel (Ni), % 0
3.0 to 3.5
Phosphorus (P), % 0
0 to 0.015
Silicon (Si), % 0
0.2 to 0.35
Sulfur (S), % 0
0 to 0.012
Zinc (Zn), % 3.5 to 4.5
0
Zirconium (Zr), % 0.45 to 1.0
0
Residuals, % 0 to 0.3
0