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EN-MC65220 Magnesium vs. CC766S Brass

EN-MC65220 magnesium belongs to the magnesium alloys classification, while CC766S brass 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 EN-MC65220 magnesium and the bottom bar is CC766S brass.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 80
120
Elastic (Young's, Tensile) Modulus, GPa 44
110
Elongation at Break, % 2.2
28
Poisson's Ratio 0.29
0.31
Shear Modulus, GPa 17
40
Tensile Strength: Ultimate (UTS), MPa 270
500
Tensile Strength: Yield (Proof), MPa 200
190

Thermal Properties

Latent Heat of Fusion, J/g 340
180
Maximum Temperature: Mechanical, °C 160
130
Melting Completion (Liquidus), °C 610
840
Melting Onset (Solidus), °C 550
800
Specific Heat Capacity, J/kg-K 980
390
Thermal Conductivity, W/m-K 110
89
Thermal Expansion, µm/m-K 26
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
32
Electrical Conductivity: Equal Weight (Specific), % IACS 120
36

Otherwise Unclassified Properties

Base Metal Price, % relative 80
24
Density, g/cm3 1.9
8.0
Embodied Carbon, kg CO2/kg material 27
2.8
Embodied Energy, MJ/kg 210
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.5
110
Resilience: Unit (Modulus of Resilience), kJ/m3 450
180
Stiffness to Weight: Axial, points 13
7.3
Stiffness to Weight: Bending, points 62
20
Strength to Weight: Axial, points 40
17
Strength to Weight: Bending, points 49
18
Thermal Diffusivity, mm2/s 61
28
Thermal Shock Resistance, points 17
17

Alloy Composition


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Aluminum (Al), % 0
0.3 to 1.8
Antimony (Sb), % 0
0 to 0.1
Copper (Cu), % 0.050 to 0.1
58 to 64
Iron (Fe), % 0 to 0.010
0 to 0.5
Lead (Pb), % 0
0 to 0.5
Magnesium (Mg), % 93.8 to 96.8
0
Manganese (Mn), % 0 to 0.15
0 to 0.5
Nickel (Ni), % 0 to 0.0050
0 to 2.0
Silicon (Si), % 0 to 0.010
0 to 0.6
Silver (Ag), % 1.3 to 1.7
0
Tin (Sn), % 0
0 to 0.5
Unspecified Rare Earths, % 1.5 to 3.0
0
Zinc (Zn), % 0 to 0.2
29.5 to 41.7
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.010
0