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EN-MC65120 Magnesium vs. C99700 Brass

EN-MC65120 magnesium belongs to the magnesium alloys classification, while C99700 brass belongs to the copper alloys. There are 26 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 C99700 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
120
Elongation at Break, % 3.1
25
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 17
46
Tensile Strength: Ultimate (UTS), MPa 160
380
Tensile Strength: Yield (Proof), MPa 110
170

Thermal Properties

Latent Heat of Fusion, J/g 330
200
Maximum Temperature: Mechanical, °C 180
160
Melting Completion (Liquidus), °C 590
900
Melting Onset (Solidus), °C 520
880
Specific Heat Capacity, J/kg-K 970
410
Thermal Expansion, µm/m-K 26
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
3.0
Electrical Conductivity: Equal Weight (Specific), % IACS 120
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 25
25
Density, g/cm3 1.9
8.1
Embodied Carbon, kg CO2/kg material 25
3.3
Embodied Energy, MJ/kg 190
53
Embodied Water, L/kg 930
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.4
78
Resilience: Unit (Modulus of Resilience), kJ/m3 140
120
Stiffness to Weight: Axial, points 13
8.3
Stiffness to Weight: Bending, points 62
20
Strength to Weight: Axial, points 23
13
Strength to Weight: Bending, points 34
14
Thermal Shock Resistance, points 9.8
11

Alloy Composition

Aluminum (Al), % 0
0.5 to 3.0
Copper (Cu), % 0 to 0.030
54 to 65.5
Iron (Fe), % 0 to 0.010
0 to 1.0
Lead (Pb), % 0
0 to 2.0
Magnesium (Mg), % 91.8 to 95.1
0
Manganese (Mn), % 0 to 0.15
11 to 15
Nickel (Ni), % 0 to 0.0050
4.0 to 6.0
Silicon (Si), % 0 to 0.010
0
Tin (Sn), % 0
0 to 1.0
Unspecified Rare Earths, % 2.5 to 4.0
0
Zinc (Zn), % 2.0 to 3.0
19 to 25
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.010
0 to 0.3