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EV31A Magnesium vs. C72900 Copper-nickel

EV31A magnesium belongs to the magnesium alloys classification, while C72900 copper-nickel belongs to the copper alloys. There are 23 material properties with values for both materials. Properties with values for just one material (10, 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 EV31A magnesium and the bottom bar is C72900 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 44
120
Elongation at Break, % 3.5
6.0 to 20
Poisson's Ratio 0.27
0.34
Shear Modulus, GPa 17
45
Shear Strength, MPa 170
540 to 630
Tensile Strength: Ultimate (UTS), MPa 260
870 to 1080
Tensile Strength: Yield (Proof), MPa 170
700 to 920

Thermal Properties

Maximum Temperature: Mechanical, °C 200
210
Melting Onset (Solidus), °C 590
950
Specific Heat Capacity, J/kg-K 1000
380
Thermal Conductivity, W/m-K 86
29
Thermal Expansion, µm/m-K 27
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 18
7.8
Electrical Conductivity: Equal Weight (Specific), % IACS 90
8.0

Otherwise Unclassified Properties

Density, g/cm3 1.8
8.8

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 8.1
49 to 210
Resilience: Unit (Modulus of Resilience), kJ/m3 330
2030 to 3490
Stiffness to Weight: Axial, points 13
7.6
Stiffness to Weight: Bending, points 65
19
Strength to Weight: Axial, points 40
27 to 34
Strength to Weight: Bending, points 50
23 to 27
Thermal Diffusivity, mm2/s 47
8.6
Thermal Shock Resistance, points 16
31 to 38