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EN-MC65120 Magnesium vs. C85200 Brass

EN-MC65120 magnesium belongs to the magnesium alloys classification, while C85200 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-MC65120 magnesium and the bottom bar is C85200 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
110
Elongation at Break, % 3.1
28
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 17
40
Tensile Strength: Ultimate (UTS), MPa 160
270
Tensile Strength: Yield (Proof), MPa 110
95

Thermal Properties

Latent Heat of Fusion, J/g 330
180
Maximum Temperature: Mechanical, °C 180
140
Melting Completion (Liquidus), °C 590
940
Melting Onset (Solidus), °C 520
930
Specific Heat Capacity, J/kg-K 970
380
Thermal Conductivity, W/m-K 100
84
Thermal Expansion, µm/m-K 26
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
18
Electrical Conductivity: Equal Weight (Specific), % IACS 120
19

Otherwise Unclassified Properties

Base Metal Price, % relative 25
26
Density, g/cm3 1.9
8.4
Embodied Carbon, kg CO2/kg material 25
2.8
Embodied Energy, MJ/kg 190
46
Embodied Water, L/kg 930
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.4
59
Resilience: Unit (Modulus of Resilience), kJ/m3 140
42
Stiffness to Weight: Axial, points 13
7.0
Stiffness to Weight: Bending, points 62
19
Strength to Weight: Axial, points 23
8.9
Strength to Weight: Bending, points 34
11
Thermal Diffusivity, mm2/s 56
27
Thermal Shock Resistance, points 9.8
9.3

Alloy Composition

Aluminum (Al), % 0
0 to 0.0050
Antimony (Sb), % 0
0 to 0.2
Copper (Cu), % 0 to 0.030
70 to 74
Iron (Fe), % 0 to 0.010
0 to 0.6
Lead (Pb), % 0
1.5 to 3.8
Magnesium (Mg), % 91.8 to 95.1
0
Manganese (Mn), % 0 to 0.15
0
Nickel (Ni), % 0 to 0.0050
0 to 1.0
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0 to 0.010
0 to 0.050
Sulfur (S), % 0
0 to 0.050
Tin (Sn), % 0
0.7 to 2.0
Unspecified Rare Earths, % 2.5 to 4.0
0
Zinc (Zn), % 2.0 to 3.0
20 to 27
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.010
0 to 0.9