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ZK40A Magnesium vs. CR021A Copper

ZK40A magnesium belongs to the magnesium alloys classification, while CR021A copper belongs to the copper alloys. There are 28 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 ZK40A magnesium and the bottom bar is CR021A copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
120
Elongation at Break, % 4.2
15
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 17
43
Tensile Strength: Ultimate (UTS), MPa 280
230
Tensile Strength: Yield (Proof), MPa 260
140

Thermal Properties

Latent Heat of Fusion, J/g 340
210
Maximum Temperature: Mechanical, °C 120
200
Melting Completion (Liquidus), °C 600
1090
Melting Onset (Solidus), °C 540
1040
Specific Heat Capacity, J/kg-K 970
390
Thermal Conductivity, W/m-K 110
380
Thermal Expansion, µm/m-K 26
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
98
Electrical Conductivity: Equal Weight (Specific), % IACS 130
99

Otherwise Unclassified Properties

Base Metal Price, % relative 13
31
Density, g/cm3 1.8
9.0
Embodied Carbon, kg CO2/kg material 24
2.6
Embodied Energy, MJ/kg 160
41
Embodied Water, L/kg 950
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 12
31
Resilience: Unit (Modulus of Resilience), kJ/m3 740
83
Stiffness to Weight: Axial, points 14
7.2
Stiffness to Weight: Bending, points 65
18
Strength to Weight: Axial, points 43
7.1
Strength to Weight: Bending, points 53
9.3
Thermal Diffusivity, mm2/s 62
110
Thermal Shock Resistance, points 17
8.1

Alloy Composition


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Bismuth (Bi), % 0
0 to 0.00050
Copper (Cu), % 0
99.95 to 99.998
Lead (Pb), % 0
0 to 0.0050
Magnesium (Mg), % 94.2 to 96.1
0
Phosphorus (P), % 0
0.0020 to 0.0070
Silver (Ag), % 0
0 to 0.015
Zinc (Zn), % 3.5 to 4.5
0
Zirconium (Zr), % 0.45 to 1.0
0
Residuals, % 0 to 0.3
0