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EN-MC21220 Magnesium vs. C96900 Copper-nickel

EN-MC21220 magnesium belongs to the magnesium alloys classification, while C96900 copper-nickel 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 C96900 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
120
Elongation at Break, % 11
4.5
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 17
45
Tensile Strength: Ultimate (UTS), MPa 210
850
Tensile Strength: Yield (Proof), MPa 120
830

Thermal Properties

Latent Heat of Fusion, J/g 350
210
Maximum Temperature: Mechanical, °C 120
210
Melting Completion (Liquidus), °C 600
1060
Melting Onset (Solidus), °C 540
960
Specific Heat Capacity, J/kg-K 1000
380
Thermal Expansion, µm/m-K 27
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 16
9.0
Electrical Conductivity: Equal Weight (Specific), % IACS 87
9.2

Otherwise Unclassified Properties

Base Metal Price, % relative 12
39
Density, g/cm3 1.7
8.8
Embodied Carbon, kg CO2/kg material 23
4.6
Embodied Energy, MJ/kg 160
72
Embodied Water, L/kg 990
360

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 20
38
Resilience: Unit (Modulus of Resilience), kJ/m3 160
2820
Stiffness to Weight: Axial, points 15
7.7
Stiffness to Weight: Bending, points 71
19
Strength to Weight: Axial, points 34
27
Strength to Weight: Bending, points 46
23
Thermal Shock Resistance, points 12
30

Alloy Composition

Aluminum (Al), % 4.4 to 5.5
0
Copper (Cu), % 0 to 0.010
73.6 to 78
Iron (Fe), % 0 to 0.0050
0 to 0.5
Lead (Pb), % 0
0 to 0.020
Magnesium (Mg), % 93.5 to 95.5
0 to 0.15
Manganese (Mn), % 0.1 to 0.6
0.050 to 0.3
Nickel (Ni), % 0 to 0.0020
14.5 to 15.5
Niobium (Nb), % 0
0 to 0.1
Silicon (Si), % 0 to 0.1
0 to 0.3
Tin (Sn), % 0
7.5 to 8.5
Zinc (Zn), % 0 to 0.3
0 to 0.5
Residuals, % 0 to 0.010
0 to 0.5