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ZK40A Magnesium vs. SAE-AISI 6150 Steel

ZK40A magnesium belongs to the magnesium alloys classification, while SAE-AISI 6150 steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (1, 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 6150 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
190
Elongation at Break, % 4.2
15 to 23
Fatigue Strength, MPa 190
300 to 750
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 17
73
Shear Strength, MPa 160
400 to 730
Tensile Strength: Ultimate (UTS), MPa 280
630 to 1200
Tensile Strength: Yield (Proof), MPa 260
420 to 1160

Thermal Properties

Latent Heat of Fusion, J/g 340
250
Maximum Temperature: Mechanical, °C 120
420
Melting Completion (Liquidus), °C 600
1460
Melting Onset (Solidus), °C 540
1410
Specific Heat Capacity, J/kg-K 970
470
Thermal Conductivity, W/m-K 110
46
Thermal Expansion, µm/m-K 26
12 to 13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 130
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 13
2.3
Density, g/cm3 1.8
7.8
Embodied Carbon, kg CO2/kg material 24
2.0
Embodied Energy, MJ/kg 160
28
Embodied Water, L/kg 950
51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 12
130 to 180
Resilience: Unit (Modulus of Resilience), kJ/m3 740
460 to 3590
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 65
24
Strength to Weight: Axial, points 43
22 to 43
Strength to Weight: Bending, points 53
21 to 32
Thermal Diffusivity, mm2/s 62
13
Thermal Shock Resistance, points 17
20 to 38

Alloy Composition


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Carbon (C), % 0
0.48 to 0.53
Chromium (Cr), % 0
0.8 to 1.1
Iron (Fe), % 0
96.7 to 97.7
Magnesium (Mg), % 94.2 to 96.1
0
Manganese (Mn), % 0
0.7 to 0.9
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0
0.15 to 0.35
Sulfur (S), % 0
0 to 0.040
Vanadium (V), % 0
0.15 to 0.3
Zinc (Zn), % 3.5 to 4.5
0
Zirconium (Zr), % 0.45 to 1.0
0
Residuals, % 0 to 0.3
0