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WE43B Magnesium vs. C68800 Brass

WE43B magnesium belongs to the magnesium alloys classification, while C68800 brass belongs to the copper alloys. There are 29 material properties with values for both materials. Properties with values for just one material (4, 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 C68800 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 44
110
Elongation at Break, % 2.2
2.0 to 36
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 17
41
Shear Strength, MPa 140
380 to 510
Tensile Strength: Ultimate (UTS), MPa 250
570 to 890
Tensile Strength: Yield (Proof), MPa 200
390 to 790

Thermal Properties

Latent Heat of Fusion, J/g 330
190
Maximum Temperature: Mechanical, °C 180
160
Melting Completion (Liquidus), °C 640
960
Melting Onset (Solidus), °C 550
950
Specific Heat Capacity, J/kg-K 960
400
Thermal Conductivity, W/m-K 51
40
Thermal Expansion, µm/m-K 27
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
18
Electrical Conductivity: Equal Weight (Specific), % IACS 53
20

Otherwise Unclassified Properties

Base Metal Price, % relative 34
26
Density, g/cm3 1.9
8.2
Embodied Carbon, kg CO2/kg material 28
2.8
Embodied Energy, MJ/kg 250
48
Embodied Water, L/kg 910
350

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.2
16 to 180
Resilience: Unit (Modulus of Resilience), kJ/m3 430
710 to 2860
Stiffness to Weight: Axial, points 13
7.3
Stiffness to Weight: Bending, points 61
19
Strength to Weight: Axial, points 36
19 to 30
Strength to Weight: Bending, points 46
19 to 25
Thermal Diffusivity, mm2/s 28
12
Thermal Shock Resistance, points 15
19 to 30

Alloy Composition


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Aluminum (Al), % 0
3.0 to 3.8
Cobalt (Co), % 0
0.25 to 0.55
Copper (Cu), % 0 to 0.020
70.8 to 75.5
Iron (Fe), % 0 to 0.010
0 to 0.2
Lead (Pb), % 0
0 to 0.050
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
Unspecified Rare Earths, % 2.4 to 4.4
0
Yttrium (Y), % 3.7 to 4.3
0
Zinc (Zn), % 0 to 0.2
21.3 to 24.1
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0
0 to 0.5