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EN-MC65120 Magnesium vs. CC764S Brass

EN-MC65120 magnesium belongs to the magnesium alloys classification, while CC764S 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-MC65120 magnesium and the bottom bar is CC764S brass.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 55
160
Elastic (Young's, Tensile) Modulus, GPa 45
110
Elongation at Break, % 3.1
15
Poisson's Ratio 0.29
0.31
Shear Modulus, GPa 17
41
Tensile Strength: Ultimate (UTS), MPa 160
680
Tensile Strength: Yield (Proof), MPa 110
290

Thermal Properties

Latent Heat of Fusion, J/g 330
180
Maximum Temperature: Mechanical, °C 180
130
Melting Completion (Liquidus), °C 590
850
Melting Onset (Solidus), °C 520
810
Specific Heat Capacity, J/kg-K 970
400
Thermal Conductivity, W/m-K 100
94
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 25
23
Density, g/cm3 1.9
7.9
Embodied Carbon, kg CO2/kg material 25
2.9
Embodied Energy, MJ/kg 190
49
Embodied Water, L/kg 930
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.4
80
Resilience: Unit (Modulus of Resilience), kJ/m3 140
390
Stiffness to Weight: Axial, points 13
7.6
Stiffness to Weight: Bending, points 62
20
Strength to Weight: Axial, points 23
24
Strength to Weight: Bending, points 34
22
Thermal Diffusivity, mm2/s 56
30
Thermal Shock Resistance, points 9.8
22

Alloy Composition


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Aluminum (Al), % 0
1.0 to 3.0
Antimony (Sb), % 0
0 to 0.050
Copper (Cu), % 0 to 0.030
52 to 66
Iron (Fe), % 0 to 0.010
0.5 to 2.5
Lead (Pb), % 0
0 to 0.3
Magnesium (Mg), % 91.8 to 95.1
0
Manganese (Mn), % 0 to 0.15
0.3 to 4.0
Nickel (Ni), % 0 to 0.0050
0 to 3.0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.010
0 to 0.1
Tin (Sn), % 0
0 to 0.3
Unspecified Rare Earths, % 2.5 to 4.0
0
Zinc (Zn), % 2.0 to 3.0
20.7 to 50.2
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.010
0