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EN-MC21220 Magnesium vs. C36500 Muntz Metal

EN-MC21220 magnesium belongs to the magnesium alloys classification, while C36500 Muntz Metal belongs to the copper alloys. There are 29 material properties with values for both materials. Properties with values for just one material (3, 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 C36500 Muntz Metal.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
100
Elongation at Break, % 11
40
Poisson's Ratio 0.29
0.3
Shear Modulus, GPa 17
39
Shear Strength, MPa 120
270
Tensile Strength: Ultimate (UTS), MPa 210
400
Tensile Strength: Yield (Proof), MPa 120
160

Thermal Properties

Latent Heat of Fusion, J/g 350
170
Maximum Temperature: Mechanical, °C 120
120
Melting Completion (Liquidus), °C 600
900
Melting Onset (Solidus), °C 540
890
Specific Heat Capacity, J/kg-K 1000
390
Thermal Conductivity, W/m-K 65
120
Thermal Expansion, µm/m-K 27
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 16
28
Electrical Conductivity: Equal Weight (Specific), % IACS 87
32

Otherwise Unclassified Properties

Base Metal Price, % relative 12
23
Density, g/cm3 1.7
8.0
Embodied Carbon, kg CO2/kg material 23
2.7
Embodied Energy, MJ/kg 160
46
Embodied Water, L/kg 990
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 20
130
Resilience: Unit (Modulus of Resilience), kJ/m3 160
120
Stiffness to Weight: Axial, points 15
7.2
Stiffness to Weight: Bending, points 71
20
Strength to Weight: Axial, points 34
14
Strength to Weight: Bending, points 46
15
Thermal Diffusivity, mm2/s 39
40
Thermal Shock Resistance, points 12
13

Alloy Composition


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Aluminum (Al), % 4.4 to 5.5
0
Copper (Cu), % 0 to 0.010
58 to 61
Iron (Fe), % 0 to 0.0050
0 to 0.15
Lead (Pb), % 0
0.25 to 0.7
Magnesium (Mg), % 93.5 to 95.5
0
Manganese (Mn), % 0.1 to 0.6
0
Nickel (Ni), % 0 to 0.0020
0
Silicon (Si), % 0 to 0.1
0
Tin (Sn), % 0
0 to 0.25
Zinc (Zn), % 0 to 0.3
37.5 to 41.8
Residuals, % 0 to 0.010
0 to 0.4