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EN-MC65220 Magnesium vs. C47940 Brass

EN-MC65220 magnesium belongs to the magnesium alloys classification, while C47940 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-MC65220 magnesium and the bottom bar is C47940 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 44
100
Elongation at Break, % 2.2
14 to 34
Poisson's Ratio 0.29
0.31
Shear Modulus, GPa 17
40
Shear Strength, MPa 150
250 to 310
Tensile Strength: Ultimate (UTS), MPa 270
380 to 520
Tensile Strength: Yield (Proof), MPa 200
160 to 390

Thermal Properties

Latent Heat of Fusion, J/g 340
170
Maximum Temperature: Mechanical, °C 160
130
Melting Completion (Liquidus), °C 610
850
Melting Onset (Solidus), °C 550
800
Specific Heat Capacity, J/kg-K 980
380
Thermal Conductivity, W/m-K 110
110
Thermal Expansion, µm/m-K 26
20

Otherwise Unclassified Properties

Base Metal Price, % relative 80
25
Density, g/cm3 1.9
8.2
Embodied Carbon, kg CO2/kg material 27
2.8
Embodied Energy, MJ/kg 210
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.5
68 to 100
Resilience: Unit (Modulus of Resilience), kJ/m3 450
120 to 740
Stiffness to Weight: Axial, points 13
7.1
Stiffness to Weight: Bending, points 62
19
Strength to Weight: Axial, points 40
13 to 17
Strength to Weight: Bending, points 49
14 to 17
Thermal Diffusivity, mm2/s 61
36
Thermal Shock Resistance, points 17
13 to 17

Alloy Composition


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Copper (Cu), % 0.050 to 0.1
63 to 66
Iron (Fe), % 0 to 0.010
0.1 to 1.0
Lead (Pb), % 0
1.0 to 2.0
Magnesium (Mg), % 93.8 to 96.8
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
Silver (Ag), % 1.3 to 1.7
0
Tin (Sn), % 0
1.2 to 2.0
Unspecified Rare Earths, % 1.5 to 3.0
0
Zinc (Zn), % 0 to 0.2
28.1 to 34.6
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.010
0 to 0.4