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EN-MC21220 Magnesium vs. C19025 Copper

EN-MC21220 magnesium belongs to the magnesium alloys classification, while C19025 copper 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-MC21220 magnesium and the bottom bar is C19025 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
120
Elongation at Break, % 11
8.0 to 17
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 17
43
Shear Strength, MPa 120
300 to 360
Tensile Strength: Ultimate (UTS), MPa 210
480 to 620

Thermal Properties

Latent Heat of Fusion, J/g 350
210
Maximum Temperature: Mechanical, °C 120
200
Melting Completion (Liquidus), °C 600
1080
Melting Onset (Solidus), °C 540
1020
Specific Heat Capacity, J/kg-K 1000
380
Thermal Conductivity, W/m-K 65
160
Thermal Expansion, µm/m-K 27
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 16
40
Electrical Conductivity: Equal Weight (Specific), % IACS 87
40

Otherwise Unclassified Properties

Base Metal Price, % relative 12
31
Density, g/cm3 1.7
8.9
Embodied Carbon, kg CO2/kg material 23
2.8
Embodied Energy, MJ/kg 160
44
Embodied Water, L/kg 990
320

Common Calculations

Stiffness to Weight: Axial, points 15
7.2
Stiffness to Weight: Bending, points 71
18
Strength to Weight: Axial, points 34
15 to 19
Strength to Weight: Bending, points 46
15 to 18
Thermal Diffusivity, mm2/s 39
47
Thermal Shock Resistance, points 12
17 to 22

Alloy Composition


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Aluminum (Al), % 4.4 to 5.5
0
Copper (Cu), % 0 to 0.010
97.1 to 98.5
Iron (Fe), % 0 to 0.0050
0
Magnesium (Mg), % 93.5 to 95.5
0
Manganese (Mn), % 0.1 to 0.6
0
Nickel (Ni), % 0 to 0.0020
0.8 to 1.2
Phosphorus (P), % 0
0.030 to 0.070
Silicon (Si), % 0 to 0.1
0
Tin (Sn), % 0
0.7 to 1.1
Zinc (Zn), % 0 to 0.3
0 to 0.2
Residuals, % 0 to 0.010
0 to 0.3