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EN-MC65120 Magnesium vs. CC761S Brass

EN-MC65120 magnesium belongs to the magnesium alloys classification, while CC761S 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 CC761S brass.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 55
150
Elastic (Young's, Tensile) Modulus, GPa 45
110
Elongation at Break, % 3.1
8.7
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 17
42
Tensile Strength: Ultimate (UTS), MPa 160
540
Tensile Strength: Yield (Proof), MPa 110
340

Thermal Properties

Latent Heat of Fusion, J/g 330
260
Maximum Temperature: Mechanical, °C 180
170
Melting Completion (Liquidus), °C 590
960
Melting Onset (Solidus), °C 520
910
Specific Heat Capacity, J/kg-K 970
410
Thermal Conductivity, W/m-K 100
27
Thermal Expansion, µm/m-K 26
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
40
Electrical Conductivity: Equal Weight (Specific), % IACS 120
43

Otherwise Unclassified Properties

Base Metal Price, % relative 25
27
Density, g/cm3 1.9
8.3
Embodied Carbon, kg CO2/kg material 25
2.7
Embodied Energy, MJ/kg 190
45
Embodied Water, L/kg 930
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.4
41
Resilience: Unit (Modulus of Resilience), kJ/m3 140
530
Stiffness to Weight: Axial, points 13
7.4
Stiffness to Weight: Bending, points 62
19
Strength to Weight: Axial, points 23
18
Strength to Weight: Bending, points 34
18
Thermal Diffusivity, mm2/s 56
8.0
Thermal Shock Resistance, points 9.8
19

Alloy Composition


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Aluminum (Al), % 0
0 to 0.1
Antimony (Sb), % 0
0 to 0.050
Copper (Cu), % 0 to 0.030
78 to 83
Iron (Fe), % 0 to 0.010
0 to 0.6
Lead (Pb), % 0
0 to 0.8
Magnesium (Mg), % 91.8 to 95.1
0
Manganese (Mn), % 0 to 0.15
0 to 0.2
Nickel (Ni), % 0 to 0.0050
0 to 1.0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.010
3.0 to 5.0
Tin (Sn), % 0
0 to 0.3
Unspecified Rare Earths, % 2.5 to 4.0
0
Zinc (Zn), % 2.0 to 3.0
8.9 to 19
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.010
0