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ISO-WD43150 Magnesium vs. C87400 Brass

ISO-WD43150 magnesium belongs to the magnesium alloys classification, while C87400 brass belongs to the copper alloys. There are 28 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 ISO-WD43150 magnesium and the bottom bar is C87400 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
110
Elongation at Break, % 2.8
21
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 18
41
Tensile Strength: Ultimate (UTS), MPa 250
390
Tensile Strength: Yield (Proof), MPa 150
160

Thermal Properties

Latent Heat of Fusion, J/g 350
250
Maximum Temperature: Mechanical, °C 95
170
Melting Completion (Liquidus), °C 610
920
Melting Onset (Solidus), °C 590
820
Specific Heat Capacity, J/kg-K 990
400
Thermal Conductivity, W/m-K 140
28
Thermal Expansion, µm/m-K 27
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 31
6.7
Electrical Conductivity: Equal Weight (Specific), % IACS 170
7.2

Otherwise Unclassified Properties

Base Metal Price, % relative 12
27
Density, g/cm3 1.7
8.3
Embodied Carbon, kg CO2/kg material 24
2.7
Embodied Energy, MJ/kg 160
44
Embodied Water, L/kg 970
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.1
65
Resilience: Unit (Modulus of Resilience), kJ/m3 250
120
Stiffness to Weight: Axial, points 15
7.4
Stiffness to Weight: Bending, points 71
19
Strength to Weight: Axial, points 41
13
Strength to Weight: Bending, points 52
14
Thermal Diffusivity, mm2/s 81
8.3
Thermal Shock Resistance, points 14
14

Alloy Composition


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Aluminum (Al), % 0
0 to 0.8
Copper (Cu), % 0 to 0.050
79 to 85.5
Lead (Pb), % 0
0 to 1.0
Magnesium (Mg), % 97.5 to 98.8
0
Manganese (Mn), % 1.2 to 2.0
0
Nickel (Ni), % 0 to 0.010
0
Silicon (Si), % 0 to 0.1
2.5 to 4.0
Zinc (Zn), % 0
12 to 16
Residuals, % 0 to 0.3
0 to 0.8