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WE54A Magnesium vs. K94200 Alloy

WE54A 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 (11, 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 WE54A magnesium and the bottom bar is K94200 alloy.

WE54A (M18410) MagnesiumUNS K94200 (FeNi42, 1.3917) Low Expansion Alloy
Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 44
140
Elongation at Break, % 4.3 to 5.6
5.0 to 32
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 17
54
Shear Strength, MPa 150 to 170
330 to 410
Tensile Strength: Ultimate (UTS), MPa 270 to 300
500 to 710
Tensile Strength: Yield (Proof), MPa 180
270 to 650

Thermal Properties

Melting Onset (Solidus), °C 570
1440
Specific Heat Capacity, J/kg-K 960
500
Thermal Conductivity, W/m-K 52
15
Thermal Expansion, µm/m-K 25
5.0

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 10
2.7
Electrical Conductivity: Equal Weight (Specific), % IACS 47
3.0

Otherwise Unclassified Properties

Density, g/cm3 1.9
8.2

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 10 to 14
35 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 360 to 380
250 to 1460
Stiffness to Weight: Axial, points 13
9.8
Stiffness to Weight: Bending, points 62
21
Strength to Weight: Axial, points 39 to 43
17 to 24
Strength to Weight: Bending, points 49 to 51
17 to 22
Thermal Diffusivity, mm2/s 28
3.7
Thermal Shock Resistance, points 18 to 19
49 to 70