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EN-MC65120 Magnesium vs. C99400 Brass

EN-MC65120 magnesium belongs to the magnesium alloys classification, while C99400 brass belongs to the copper alloys. There are 24 material properties with values for both materials. Properties with values for just one material (7, 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 C99400 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
120
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 17
44
Tensile Strength: Ultimate (UTS), MPa 160
460 to 550
Tensile Strength: Yield (Proof), MPa 110
230 to 370

Thermal Properties

Latent Heat of Fusion, J/g 330
230
Maximum Temperature: Mechanical, °C 180
200
Melting Completion (Liquidus), °C 590
1070
Melting Onset (Solidus), °C 520
1020
Specific Heat Capacity, J/kg-K 970
400
Thermal Expansion, µm/m-K 26
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
17
Electrical Conductivity: Equal Weight (Specific), % IACS 120
17

Otherwise Unclassified Properties

Base Metal Price, % relative 25
30
Density, g/cm3 1.9
8.7
Embodied Carbon, kg CO2/kg material 25
2.8
Embodied Energy, MJ/kg 190
45
Embodied Water, L/kg 930
310

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 140
230 to 590
Stiffness to Weight: Axial, points 13
7.5
Stiffness to Weight: Bending, points 62
19
Strength to Weight: Axial, points 23
15 to 17
Strength to Weight: Bending, points 34
15 to 17
Thermal Shock Resistance, points 9.8
16 to 19

Alloy Composition

Aluminum (Al), % 0
0.5 to 2.0
Copper (Cu), % 0 to 0.030
83.5 to 96.5
Iron (Fe), % 0 to 0.010
1.0 to 3.0
Lead (Pb), % 0
0 to 0.25
Magnesium (Mg), % 91.8 to 95.1
0
Manganese (Mn), % 0 to 0.15
0 to 0.5
Nickel (Ni), % 0 to 0.0050
1.0 to 3.5
Silicon (Si), % 0 to 0.010
0.5 to 2.0
Unspecified Rare Earths, % 2.5 to 4.0
0
Zinc (Zn), % 2.0 to 3.0
0.5 to 5.0
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.010
0 to 0.3