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C19025 Copper vs. ZK51A Magnesium

C19025 copper belongs to the copper alloys classification, while ZK51A magnesium belongs to the magnesium alloys. There are 26 material properties with values for both materials. Properties with values for just one material (5, 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 C19025 copper and the bottom bar is ZK51A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
45
Elongation at Break, % 8.0 to 17
4.7
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 43
18
Shear Strength, MPa 300 to 360
160
Tensile Strength: Ultimate (UTS), MPa 480 to 620
240

Thermal Properties

Latent Heat of Fusion, J/g 210
340
Maximum Temperature: Mechanical, °C 200
120
Melting Completion (Liquidus), °C 1080
640
Melting Onset (Solidus), °C 1020
550
Specific Heat Capacity, J/kg-K 380
970
Thermal Conductivity, W/m-K 160
110
Thermal Expansion, µm/m-K 17
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
28
Electrical Conductivity: Equal Weight (Specific), % IACS 40
140

Otherwise Unclassified Properties

Base Metal Price, % relative 31
13
Density, g/cm3 8.9
1.8
Embodied Carbon, kg CO2/kg material 2.8
24
Embodied Energy, MJ/kg 44
160
Embodied Water, L/kg 320
940

Common Calculations

Stiffness to Weight: Axial, points 7.2
14
Stiffness to Weight: Bending, points 18
64
Strength to Weight: Axial, points 15 to 19
36
Strength to Weight: Bending, points 15 to 18
47
Thermal Diffusivity, mm2/s 47
61
Thermal Shock Resistance, points 17 to 22
15

Alloy Composition

Copper (Cu), % 97.1 to 98.5
0 to 0.1
Magnesium (Mg), % 0
93.1 to 95.9
Nickel (Ni), % 0.8 to 1.2
0 to 0.010
Phosphorus (P), % 0.030 to 0.070
0
Tin (Sn), % 0.7 to 1.1
0
Zinc (Zn), % 0 to 0.2
3.6 to 5.5
Zirconium (Zr), % 0
0.5 to 1.0
Residuals, % 0
0 to 0.3