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EN-MC65120 Magnesium vs. C72800 Copper-nickel

EN-MC65120 magnesium belongs to the magnesium alloys classification, while C72800 copper-nickel 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-MC65120 magnesium and the bottom bar is C72800 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
120
Elongation at Break, % 3.1
3.9 to 23
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 17
44
Shear Strength, MPa 92
330 to 740
Tensile Strength: Ultimate (UTS), MPa 160
520 to 1270
Tensile Strength: Yield (Proof), MPa 110
250 to 1210

Thermal Properties

Latent Heat of Fusion, J/g 330
210
Maximum Temperature: Mechanical, °C 180
200
Melting Completion (Liquidus), °C 590
1080
Melting Onset (Solidus), °C 520
920
Specific Heat Capacity, J/kg-K 970
380
Thermal Conductivity, W/m-K 100
55
Thermal Expansion, µm/m-K 26
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
11
Electrical Conductivity: Equal Weight (Specific), % IACS 120
11

Otherwise Unclassified Properties

Base Metal Price, % relative 25
38
Density, g/cm3 1.9
8.8
Embodied Carbon, kg CO2/kg material 25
4.4
Embodied Energy, MJ/kg 190
68
Embodied Water, L/kg 930
360

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.4
37 to 99
Resilience: Unit (Modulus of Resilience), kJ/m3 140
260 to 5650
Stiffness to Weight: Axial, points 13
7.4
Stiffness to Weight: Bending, points 62
19
Strength to Weight: Axial, points 23
17 to 40
Strength to Weight: Bending, points 34
16 to 30
Thermal Diffusivity, mm2/s 56
17
Thermal Shock Resistance, points 9.8
19 to 45

Alloy Composition


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Aluminum (Al), % 0
0 to 0.1
Antimony (Sb), % 0
0 to 0.020
Bismuth (Bi), % 0
0 to 0.0010
Boron (B), % 0
0 to 0.0010
Copper (Cu), % 0 to 0.030
78.3 to 82.8
Iron (Fe), % 0 to 0.010
0 to 0.5
Lead (Pb), % 0
0 to 0.0050
Magnesium (Mg), % 91.8 to 95.1
0.0050 to 0.15
Manganese (Mn), % 0 to 0.15
0.050 to 0.3
Nickel (Ni), % 0 to 0.0050
9.5 to 10.5
Niobium (Nb), % 0
0.1 to 0.3
Phosphorus (P), % 0
0 to 0.0050
Silicon (Si), % 0 to 0.010
0 to 0.050
Sulfur (S), % 0
0 to 0.0025
Tin (Sn), % 0
7.5 to 8.5
Titanium (Ti), % 0
0 to 0.010
Unspecified Rare Earths, % 2.5 to 4.0
0
Zinc (Zn), % 2.0 to 3.0
0 to 1.0
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.010
0 to 0.3