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ZK61A Magnesium vs. K94200 Alloy

ZK61A magnesium belongs to the magnesium alloys classification, while K94200 alloy belongs to the iron alloys. There are 22 material properties with values for both materials. Properties with values for just one material (10, 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 ZK61A magnesium and the bottom bar is K94200 alloy.

ZK61A (M16610) MagnesiumUNS K94200 (FeNi42, 1.3917) Low Expansion Alloy
Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 46
140
Elongation at Break, % 5.8 to 7.1
5.0 to 32
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 18
54
Shear Strength, MPa 170 to 180
330 to 410
Tensile Strength: Ultimate (UTS), MPa 290 to 310
500 to 710
Tensile Strength: Yield (Proof), MPa 180 to 200
270 to 650

Thermal Properties

Melting Onset (Solidus), °C 530
1440
Specific Heat Capacity, J/kg-K 960
500
Thermal Conductivity, W/m-K 120
15
Thermal Expansion, µm/m-K 27
5.0

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 29
2.7
Electrical Conductivity: Equal Weight (Specific), % IACS 130
3.0

Otherwise Unclassified Properties

Density, g/cm3 1.9
8.2

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 15 to 19
35 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 370 to 420
250 to 1460
Stiffness to Weight: Axial, points 13
9.8
Stiffness to Weight: Bending, points 62
21
Strength to Weight: Axial, points 42 to 45
17 to 24
Strength to Weight: Bending, points 50 to 53
17 to 22
Thermal Diffusivity, mm2/s 65
3.7
Thermal Shock Resistance, points 17 to 18
49 to 70