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K94200 Alloy vs. ZK40A Magnesium

K94200 alloy belongs to the iron alloys classification, while ZK40A magnesium belongs to the magnesium alloys. There are 22 material properties with values for both materials. Properties with values for just one material (9, 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 K94200 alloy and the bottom bar is ZK40A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 140
45
Elongation at Break, % 5.0 to 32
4.2
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 54
17
Shear Strength, MPa 330 to 410
160
Tensile Strength: Ultimate (UTS), MPa 500 to 710
280
Tensile Strength: Yield (Proof), MPa 270 to 650
260

Thermal Properties

Melting Onset (Solidus), °C 1440
540
Specific Heat Capacity, J/kg-K 500
970
Thermal Conductivity, W/m-K 15
110
Thermal Expansion, µm/m-K 5.0
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.7
27
Electrical Conductivity: Equal Weight (Specific), % IACS 3.0
130

Otherwise Unclassified Properties

Density, g/cm3 8.2
1.8

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 35 to 130
12
Resilience: Unit (Modulus of Resilience), kJ/m3 250 to 1460
740
Stiffness to Weight: Axial, points 9.8
14
Stiffness to Weight: Bending, points 21
65
Strength to Weight: Axial, points 17 to 24
43
Strength to Weight: Bending, points 17 to 22
53
Thermal Diffusivity, mm2/s 3.7
62
Thermal Shock Resistance, points 49 to 70
17