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WE43B Magnesium vs. C84400 Valve Metal

WE43B magnesium belongs to the magnesium alloys classification, while C84400 valve metal belongs to the copper alloys. There are 28 material properties with values for both materials. Properties with values for just one material (3, 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 WE43B magnesium and the bottom bar is C84400 valve metal.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 44
100
Elongation at Break, % 2.2
19
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 17
39
Tensile Strength: Ultimate (UTS), MPa 250
230
Tensile Strength: Yield (Proof), MPa 200
110

Thermal Properties

Latent Heat of Fusion, J/g 330
180
Maximum Temperature: Mechanical, °C 180
160
Melting Completion (Liquidus), °C 640
1000
Melting Onset (Solidus), °C 550
840
Specific Heat Capacity, J/kg-K 960
370
Thermal Conductivity, W/m-K 51
72
Thermal Expansion, µm/m-K 27
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
16
Electrical Conductivity: Equal Weight (Specific), % IACS 53
17

Otherwise Unclassified Properties

Base Metal Price, % relative 34
29
Density, g/cm3 1.9
8.8
Embodied Carbon, kg CO2/kg material 28
2.8
Embodied Energy, MJ/kg 250
46
Embodied Water, L/kg 910
340

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.2
36
Resilience: Unit (Modulus of Resilience), kJ/m3 430
58
Stiffness to Weight: Axial, points 13
6.6
Stiffness to Weight: Bending, points 61
18
Strength to Weight: Axial, points 36
7.2
Strength to Weight: Bending, points 46
9.4
Thermal Diffusivity, mm2/s 28
22
Thermal Shock Resistance, points 15
8.3

Alloy Composition


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Aluminum (Al), % 0
0 to 0.0050
Antimony (Sb), % 0
0 to 0.25
Copper (Cu), % 0 to 0.020
78 to 82
Iron (Fe), % 0 to 0.010
0 to 0.4
Lead (Pb), % 0
6.0 to 8.0
Lithium (Li), % 0 to 0.2
0
Magnesium (Mg), % 89.8 to 93.5
0
Manganese (Mn), % 0 to 0.030
0
Nickel (Ni), % 0 to 0.0050
0 to 1.0
Phosphorus (P), % 0
0 to 1.5
Silicon (Si), % 0
0 to 0.0050
Sulfur (S), % 0
0 to 0.080
Tin (Sn), % 0
2.3 to 3.5
Unspecified Rare Earths, % 2.4 to 4.4
0
Yttrium (Y), % 3.7 to 4.3
0
Zinc (Zn), % 0 to 0.2
7.0 to 10
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0
0 to 0.7