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K1A Magnesium vs. C72900 Copper-nickel

K1A magnesium belongs to the magnesium alloys classification, while C72900 copper-nickel belongs to the copper alloys. There are 29 material properties with values for both materials. Properties with values for just one material (2, 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 K1A magnesium and the bottom bar is C72900 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 43
120
Elongation at Break, % 13
6.0 to 20
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 17
45
Shear Strength, MPa 55
540 to 630
Tensile Strength: Ultimate (UTS), MPa 180
870 to 1080
Tensile Strength: Yield (Proof), MPa 51
700 to 920

Thermal Properties

Latent Heat of Fusion, J/g 350
210
Maximum Temperature: Mechanical, °C 120
210
Melting Completion (Liquidus), °C 650
1120
Melting Onset (Solidus), °C 650
950
Specific Heat Capacity, J/kg-K 1000
380
Thermal Conductivity, W/m-K 120
29
Thermal Expansion, µm/m-K 27
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 30
7.8
Electrical Conductivity: Equal Weight (Specific), % IACS 170
8.0

Otherwise Unclassified Properties

Base Metal Price, % relative 13
39
Density, g/cm3 1.6
8.8
Embodied Carbon, kg CO2/kg material 24
4.6
Embodied Energy, MJ/kg 170
72
Embodied Water, L/kg 970
360

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 17
49 to 210
Resilience: Unit (Modulus of Resilience), kJ/m3 30
2030 to 3490
Stiffness to Weight: Axial, points 15
7.6
Stiffness to Weight: Bending, points 73
19
Strength to Weight: Axial, points 31
27 to 34
Strength to Weight: Bending, points 43
23 to 27
Thermal Diffusivity, mm2/s 75
8.6
Thermal Shock Resistance, points 11
31 to 38

Alloy Composition


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Copper (Cu), % 0
74.1 to 78
Iron (Fe), % 0
0 to 0.5
Lead (Pb), % 0
0 to 0.020
Magnesium (Mg), % 98.7 to 99.6
0 to 0.15
Manganese (Mn), % 0
0 to 0.3
Nickel (Ni), % 0
14.5 to 15.5
Niobium (Nb), % 0
0 to 0.1
Tin (Sn), % 0
7.5 to 8.5
Zinc (Zn), % 0
0 to 0.5
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.3
0 to 0.3