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EN-MC21320 Magnesium vs. C71580 Copper-nickel

EN-MC21320 magnesium belongs to the magnesium alloys classification, while C71580 copper-nickel belongs to the copper alloys. There are 30 material properties with values for both materials. Properties with values for just one material (1, 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 C71580 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 68
75
Elastic (Young's, Tensile) Modulus, GPa 45
140
Elongation at Break, % 7.5
40
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 18
51
Shear Strength, MPa 130
230
Tensile Strength: Ultimate (UTS), MPa 230
330
Tensile Strength: Yield (Proof), MPa 140
110

Thermal Properties

Latent Heat of Fusion, J/g 370
230
Maximum Temperature: Mechanical, °C 110
260
Melting Completion (Liquidus), °C 600
1180
Melting Onset (Solidus), °C 530
1120
Specific Heat Capacity, J/kg-K 1000
400
Thermal Conductivity, W/m-K 66
39
Thermal Expansion, µm/m-K 26
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 17
4.7
Electrical Conductivity: Equal Weight (Specific), % IACS 91
4.7

Otherwise Unclassified Properties

Base Metal Price, % relative 12
41
Density, g/cm3 1.6
8.9
Embodied Carbon, kg CO2/kg material 23
5.1
Embodied Energy, MJ/kg 160
74
Embodied Water, L/kg 980
280

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 15
100
Resilience: Unit (Modulus of Resilience), kJ/m3 200
47
Stiffness to Weight: Axial, points 15
8.5
Stiffness to Weight: Bending, points 72
19
Strength to Weight: Axial, points 38
10
Strength to Weight: Bending, points 50
12
Thermal Diffusivity, mm2/s 40
11
Thermal Shock Resistance, points 13
11

Alloy Composition


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Aluminum (Al), % 3.5 to 5.0
0
Carbon (C), % 0
0 to 0.070
Copper (Cu), % 0 to 0.010
65.5 to 71
Iron (Fe), % 0 to 0.0050
0 to 0.5
Lead (Pb), % 0
0 to 0.050
Magnesium (Mg), % 92.5 to 95.9
0
Manganese (Mn), % 0.1 to 0.7
0 to 0.3
Nickel (Ni), % 0 to 0.0020
29 to 33
Silicon (Si), % 0.5 to 1.5
0
Zinc (Zn), % 0 to 0.2
0 to 0.050
Residuals, % 0 to 0.010
0 to 0.5