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C55180 Copper vs. ZK61A Magnesium

C55180 copper belongs to the copper alloys classification, while ZK61A magnesium belongs to the magnesium alloys. There are 26 material properties with values for both materials. Properties with values for just one material (6, 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 C55180 copper and the bottom bar is ZK61A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
46
Elongation at Break, % 20
5.8 to 7.1
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 41
18
Tensile Strength: Ultimate (UTS), MPa 200
290 to 310
Tensile Strength: Yield (Proof), MPa 100
180 to 200

Thermal Properties

Latent Heat of Fusion, J/g 200
330
Maximum Temperature: Mechanical, °C 200
120
Melting Completion (Liquidus), °C 920
640
Melting Onset (Solidus), °C 710
530
Specific Heat Capacity, J/kg-K 400
960
Thermal Conductivity, W/m-K 200
120
Thermal Expansion, µm/m-K 17
27

Otherwise Unclassified Properties

Base Metal Price, % relative 29
13
Density, g/cm3 8.6
1.9
Embodied Carbon, kg CO2/kg material 2.5
23
Embodied Energy, MJ/kg 39
160
Embodied Water, L/kg 290
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 34
15 to 19
Resilience: Unit (Modulus of Resilience), kJ/m3 48
370 to 420
Stiffness to Weight: Axial, points 7.1
13
Stiffness to Weight: Bending, points 18
62
Strength to Weight: Axial, points 6.4
42 to 45
Strength to Weight: Bending, points 8.8
50 to 53
Thermal Diffusivity, mm2/s 56
65
Thermal Shock Resistance, points 7.9
17 to 18

Alloy Composition

Copper (Cu), % 94.7 to 95.2
0 to 0.1
Magnesium (Mg), % 0
92.1 to 93.9
Nickel (Ni), % 0
0 to 0.010
Phosphorus (P), % 4.8 to 5.2
0
Zinc (Zn), % 0
5.5 to 6.5
Zirconium (Zr), % 0
0.6 to 1.0
Residuals, % 0
0 to 0.3