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C19400 Copper vs. ZK61A Magnesium

C19400 copper belongs to the copper alloys classification, while ZK61A magnesium belongs to the magnesium 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 C19400 copper and the bottom bar is ZK61A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
46
Elongation at Break, % 2.3 to 37
5.8 to 7.1
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 44
18
Shear Strength, MPa 210 to 300
170 to 180
Tensile Strength: Ultimate (UTS), MPa 310 to 630
290 to 310
Tensile Strength: Yield (Proof), MPa 98 to 520
180 to 200

Thermal Properties

Latent Heat of Fusion, J/g 210
330
Maximum Temperature: Mechanical, °C 200
120
Melting Completion (Liquidus), °C 1090
640
Melting Onset (Solidus), °C 1080
530
Specific Heat Capacity, J/kg-K 390
960
Thermal Conductivity, W/m-K 260
120
Thermal Expansion, µm/m-K 17
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 58 to 68
29
Electrical Conductivity: Equal Weight (Specific), % IACS 58 to 69
130

Otherwise Unclassified Properties

Base Metal Price, % relative 30
13
Density, g/cm3 8.9
1.9
Embodied Carbon, kg CO2/kg material 2.6
23
Embodied Energy, MJ/kg 40
160
Embodied Water, L/kg 300
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.5 to 220
15 to 19
Resilience: Unit (Modulus of Resilience), kJ/m3 41 to 1140
370 to 420
Stiffness to Weight: Axial, points 7.3
13
Stiffness to Weight: Bending, points 18
62
Strength to Weight: Axial, points 9.7 to 20
42 to 45
Strength to Weight: Bending, points 11 to 18
50 to 53
Thermal Diffusivity, mm2/s 75
65
Thermal Shock Resistance, points 11 to 22
17 to 18

Alloy Composition

Copper (Cu), % 96.8 to 97.8
0 to 0.1
Iron (Fe), % 2.1 to 2.6
0
Lead (Pb), % 0 to 0.030
0
Magnesium (Mg), % 0
92.1 to 93.9
Nickel (Ni), % 0
0 to 0.010
Phosphorus (P), % 0.015 to 0.15
0
Zinc (Zn), % 0.050 to 0.2
5.5 to 6.5
Zirconium (Zr), % 0
0.6 to 1.0
Residuals, % 0
0 to 0.3