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EN-MC65120 Magnesium vs. C99750 Brass

EN-MC65120 magnesium belongs to the magnesium alloys classification, while C99750 brass belongs to the copper alloys. There are 27 material properties with values for both materials. Properties with values for just one material (5, 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 C99750 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 55
110 to 120
Elastic (Young's, Tensile) Modulus, GPa 45
130
Elongation at Break, % 3.1
20 to 30
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 17
48
Tensile Strength: Ultimate (UTS), MPa 160
450 to 520
Tensile Strength: Yield (Proof), MPa 110
220 to 280

Thermal Properties

Latent Heat of Fusion, J/g 330
200
Maximum Temperature: Mechanical, °C 180
160
Melting Completion (Liquidus), °C 590
840
Melting Onset (Solidus), °C 520
820
Specific Heat Capacity, J/kg-K 970
410
Thermal Expansion, µm/m-K 26
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 120
2.2

Otherwise Unclassified Properties

Base Metal Price, % relative 25
23
Density, g/cm3 1.9
8.1
Embodied Carbon, kg CO2/kg material 25
3.1
Embodied Energy, MJ/kg 190
51
Embodied Water, L/kg 930
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.4
87 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 140
190 to 300
Stiffness to Weight: Axial, points 13
8.6
Stiffness to Weight: Bending, points 62
21
Strength to Weight: Axial, points 23
15 to 18
Strength to Weight: Bending, points 34
16 to 18
Thermal Shock Resistance, points 9.8
13 to 15

Alloy Composition

Aluminum (Al), % 0
0.25 to 3.0
Copper (Cu), % 0 to 0.030
55 to 61
Iron (Fe), % 0 to 0.010
0 to 1.0
Lead (Pb), % 0
0.5 to 2.5
Magnesium (Mg), % 91.8 to 95.1
0
Manganese (Mn), % 0 to 0.15
17 to 23
Nickel (Ni), % 0 to 0.0050
0 to 5.0
Silicon (Si), % 0 to 0.010
0
Unspecified Rare Earths, % 2.5 to 4.0
0
Zinc (Zn), % 2.0 to 3.0
17 to 23
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.010
0 to 0.3