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EN-MC65120 Magnesium vs. C87800 Brass

EN-MC65120 magnesium belongs to the magnesium alloys classification, while C87800 brass belongs to the copper alloys. There are 28 material properties with values for both materials. Properties with values for just one material (4, 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 C87800 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
110
Elongation at Break, % 3.1
25
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 17
42
Tensile Strength: Ultimate (UTS), MPa 160
590
Tensile Strength: Yield (Proof), MPa 110
350

Thermal Properties

Latent Heat of Fusion, J/g 330
260
Maximum Temperature: Mechanical, °C 180
170
Melting Completion (Liquidus), °C 590
920
Melting Onset (Solidus), °C 520
820
Specific Heat Capacity, J/kg-K 970
410
Thermal Conductivity, W/m-K 100
28
Thermal Expansion, µm/m-K 26
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
6.7
Electrical Conductivity: Equal Weight (Specific), % IACS 120
7.3

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
44
Embodied Water, L/kg 930
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.4
130
Resilience: Unit (Modulus of Resilience), kJ/m3 140
540
Stiffness to Weight: Axial, points 13
7.4
Stiffness to Weight: Bending, points 62
19
Strength to Weight: Axial, points 23
20
Strength to Weight: Bending, points 34
19
Thermal Diffusivity, mm2/s 56
8.3
Thermal Shock Resistance, points 9.8
21

Alloy Composition

Aluminum (Al), % 0
0 to 0.15
Antimony (Sb), % 0
0 to 0.050
Arsenic (As), % 0
0 to 0.050
Copper (Cu), % 0 to 0.030
80 to 84.2
Iron (Fe), % 0 to 0.010
0 to 0.15
Lead (Pb), % 0
0 to 0.15
Magnesium (Mg), % 91.8 to 95.1
0 to 0.010
Manganese (Mn), % 0 to 0.15
0 to 0.15
Nickel (Ni), % 0 to 0.0050
0 to 0.2
Phosphorus (P), % 0
0 to 0.010
Silicon (Si), % 0 to 0.010
3.8 to 4.2
Sulfur (S), % 0
0 to 0.050
Tin (Sn), % 0
0 to 0.25
Unspecified Rare Earths, % 2.5 to 4.0
0
Zinc (Zn), % 2.0 to 3.0
12 to 16
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.010
0 to 0.5