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EN-MC21320 Magnesium vs. CC766S Brass

EN-MC21320 magnesium belongs to the magnesium alloys classification, while CC766S 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 EN-MC21320 magnesium and the bottom bar is CC766S brass.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 68
120
Elastic (Young's, Tensile) Modulus, GPa 45
110
Elongation at Break, % 7.5
28
Poisson's Ratio 0.29
0.31
Shear Modulus, GPa 18
40
Tensile Strength: Ultimate (UTS), MPa 230
500
Tensile Strength: Yield (Proof), MPa 140
190

Thermal Properties

Latent Heat of Fusion, J/g 370
180
Maximum Temperature: Mechanical, °C 110
130
Melting Completion (Liquidus), °C 600
840
Melting Onset (Solidus), °C 530
800
Specific Heat Capacity, J/kg-K 1000
390
Thermal Conductivity, W/m-K 66
89
Thermal Expansion, µm/m-K 26
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 17
32
Electrical Conductivity: Equal Weight (Specific), % IACS 91
36

Otherwise Unclassified Properties

Base Metal Price, % relative 12
24
Density, g/cm3 1.6
8.0
Embodied Carbon, kg CO2/kg material 23
2.8
Embodied Energy, MJ/kg 160
48
Embodied Water, L/kg 980
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 15
110
Resilience: Unit (Modulus of Resilience), kJ/m3 200
180
Stiffness to Weight: Axial, points 15
7.3
Stiffness to Weight: Bending, points 72
20
Strength to Weight: Axial, points 38
17
Strength to Weight: Bending, points 50
18
Thermal Diffusivity, mm2/s 40
28
Thermal Shock Resistance, points 13
17

Alloy Composition


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Aluminum (Al), % 3.5 to 5.0
0.3 to 1.8
Antimony (Sb), % 0
0 to 0.1
Copper (Cu), % 0 to 0.010
58 to 64
Iron (Fe), % 0 to 0.0050
0 to 0.5
Lead (Pb), % 0
0 to 0.5
Magnesium (Mg), % 92.5 to 95.9
0
Manganese (Mn), % 0.1 to 0.7
0 to 0.5
Nickel (Ni), % 0 to 0.0020
0 to 2.0
Silicon (Si), % 0.5 to 1.5
0 to 0.6
Tin (Sn), % 0
0 to 0.5
Zinc (Zn), % 0 to 0.2
29.5 to 41.7
Residuals, % 0 to 0.010
0