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EN-MC65120 Magnesium vs. C47940 Brass

EN-MC65120 magnesium belongs to the magnesium alloys classification, while C47940 brass belongs to the copper alloys. There are 27 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 C47940 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
100
Elongation at Break, % 3.1
14 to 34
Poisson's Ratio 0.29
0.31
Shear Modulus, GPa 17
40
Shear Strength, MPa 92
250 to 310
Tensile Strength: Ultimate (UTS), MPa 160
380 to 520
Tensile Strength: Yield (Proof), MPa 110
160 to 390

Thermal Properties

Latent Heat of Fusion, J/g 330
170
Maximum Temperature: Mechanical, °C 180
130
Melting Completion (Liquidus), °C 590
850
Melting Onset (Solidus), °C 520
800
Specific Heat Capacity, J/kg-K 970
380
Thermal Conductivity, W/m-K 100
110
Thermal Expansion, µm/m-K 26
20

Otherwise Unclassified Properties

Base Metal Price, % relative 25
25
Density, g/cm3 1.9
8.2
Embodied Carbon, kg CO2/kg material 25
2.8
Embodied Energy, MJ/kg 190
47
Embodied Water, L/kg 930
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.4
68 to 100
Resilience: Unit (Modulus of Resilience), kJ/m3 140
120 to 740
Stiffness to Weight: Axial, points 13
7.1
Stiffness to Weight: Bending, points 62
19
Strength to Weight: Axial, points 23
13 to 17
Strength to Weight: Bending, points 34
14 to 17
Thermal Diffusivity, mm2/s 56
36
Thermal Shock Resistance, points 9.8
13 to 17

Alloy Composition

Copper (Cu), % 0 to 0.030
63 to 66
Iron (Fe), % 0 to 0.010
0.1 to 1.0
Lead (Pb), % 0
1.0 to 2.0
Magnesium (Mg), % 91.8 to 95.1
0
Manganese (Mn), % 0 to 0.15
0
Nickel (Ni), % 0 to 0.0050
0.1 to 0.5
Silicon (Si), % 0 to 0.010
0
Tin (Sn), % 0
1.2 to 2.0
Unspecified Rare Earths, % 2.5 to 4.0
0
Zinc (Zn), % 2.0 to 3.0
28.1 to 34.6
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0
0 to 0.4