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K94200 Alloy vs. ZK61A Magnesium

K94200 alloy belongs to the iron alloys classification, while ZK61A magnesium belongs to the magnesium 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 K94200 alloy and the bottom bar is ZK61A magnesium.

UNS K94200 (FeNi42, 1.3917) Low Expansion AlloyZK61A (M16610) Magnesium
Metric UnitsUS Customary Units

Mechanical Properties

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

Thermal Properties

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

Electrical Properties

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

Otherwise Unclassified Properties

Density, g/cm3 8.2
1.9

Common Calculations

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