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WE43B Magnesium vs. C69400 Brass

WE43B magnesium belongs to the magnesium alloys classification, while C69400 brass belongs to the copper alloys. There are 29 material properties with values for both materials. Properties with values for just one material (2, 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 C69400 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 44
110
Elongation at Break, % 2.2
17
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 17
42
Shear Strength, MPa 140
350
Tensile Strength: Ultimate (UTS), MPa 250
570
Tensile Strength: Yield (Proof), MPa 200
270

Thermal Properties

Latent Heat of Fusion, J/g 330
260
Maximum Temperature: Mechanical, °C 180
170
Melting Completion (Liquidus), °C 640
920
Melting Onset (Solidus), °C 550
820
Specific Heat Capacity, J/kg-K 960
410
Thermal Conductivity, W/m-K 51
26
Thermal Expansion, µm/m-K 27
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
6.2
Electrical Conductivity: Equal Weight (Specific), % IACS 53
6.7

Otherwise Unclassified Properties

Base Metal Price, % relative 34
27
Density, g/cm3 1.9
8.3
Embodied Carbon, kg CO2/kg material 28
2.7
Embodied Energy, MJ/kg 250
44
Embodied Water, L/kg 910
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.2
80
Resilience: Unit (Modulus of Resilience), kJ/m3 430
340
Stiffness to Weight: Axial, points 13
7.4
Stiffness to Weight: Bending, points 61
19
Strength to Weight: Axial, points 36
19
Strength to Weight: Bending, points 46
18
Thermal Diffusivity, mm2/s 28
7.7
Thermal Shock Resistance, points 15
20

Alloy Composition


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Copper (Cu), % 0 to 0.020
80 to 83
Iron (Fe), % 0 to 0.010
0 to 0.2
Lead (Pb), % 0
0 to 0.3
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
Silicon (Si), % 0
3.5 to 4.5
Unspecified Rare Earths, % 2.4 to 4.4
0
Yttrium (Y), % 3.7 to 4.3
0
Zinc (Zn), % 0 to 0.2
11.5 to 16.5
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0
0 to 0.5