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EN-MC21320 Magnesium vs. C71520 Copper-nickel

EN-MC21320 magnesium belongs to the magnesium alloys classification, while C71520 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-MC21320 magnesium and the bottom bar is C71520 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
140
Elongation at Break, % 7.5
10 to 45
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 18
51
Shear Strength, MPa 130
250 to 340
Tensile Strength: Ultimate (UTS), MPa 230
370 to 570
Tensile Strength: Yield (Proof), MPa 140
140 to 430

Thermal Properties

Latent Heat of Fusion, J/g 370
230
Maximum Temperature: Mechanical, °C 110
260
Melting Completion (Liquidus), °C 600
1170
Melting Onset (Solidus), °C 530
1120
Specific Heat Capacity, J/kg-K 1000
400
Thermal Conductivity, W/m-K 66
32
Thermal Expansion, µm/m-K 26
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 17
5.7
Electrical Conductivity: Equal Weight (Specific), % IACS 91
5.8

Otherwise Unclassified Properties

Base Metal Price, % relative 12
40
Density, g/cm3 1.6
8.9
Embodied Carbon, kg CO2/kg material 23
5.0
Embodied Energy, MJ/kg 160
73
Embodied Water, L/kg 980
280

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 15
54 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 200
67 to 680
Stiffness to Weight: Axial, points 15
8.6
Stiffness to Weight: Bending, points 72
19
Strength to Weight: Axial, points 38
12 to 18
Strength to Weight: Bending, points 50
13 to 17
Thermal Diffusivity, mm2/s 40
8.9
Thermal Shock Resistance, points 13
12 to 19

Alloy Composition


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Aluminum (Al), % 3.5 to 5.0
0
Carbon (C), % 0
0 to 0.050
Copper (Cu), % 0 to 0.010
65 to 71.6
Iron (Fe), % 0 to 0.0050
0.4 to 1.0
Lead (Pb), % 0
0 to 0.020
Magnesium (Mg), % 92.5 to 95.9
0
Manganese (Mn), % 0.1 to 0.7
0 to 1.0
Nickel (Ni), % 0 to 0.0020
28 to 33
Phosphorus (P), % 0
0 to 0.2
Silicon (Si), % 0.5 to 1.5
0
Sulfur (S), % 0
0 to 0.020
Zinc (Zn), % 0 to 0.2
0 to 0.5
Residuals, % 0 to 0.010
0 to 0.5