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AZ31C Magnesium vs. C14700 Copper

AZ31C magnesium belongs to the magnesium alloys classification, while C14700 copper belongs to the copper alloys. There are 29 material properties with values for both materials. Properties with values for just one material (1, 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 AZ31C magnesium and the bottom bar is C14700 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
120
Elongation at Break, % 12
9.1 to 35
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 17
43
Shear Strength, MPa 130
160 to 190
Tensile Strength: Ultimate (UTS), MPa 260
240 to 320
Tensile Strength: Yield (Proof), MPa 200
85 to 250

Thermal Properties

Latent Heat of Fusion, J/g 350
210
Maximum Temperature: Mechanical, °C 110
200
Melting Completion (Liquidus), °C 600
1080
Melting Onset (Solidus), °C 550
1070
Specific Heat Capacity, J/kg-K 990
390
Thermal Conductivity, W/m-K 130
370
Thermal Expansion, µm/m-K 26
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 19
95
Electrical Conductivity: Equal Weight (Specific), % IACS 98
96

Otherwise Unclassified Properties

Base Metal Price, % relative 12
30
Density, g/cm3 1.7
8.9
Embodied Carbon, kg CO2/kg material 23
2.6
Embodied Energy, MJ/kg 160
41
Embodied Water, L/kg 970
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 28
25 to 65
Resilience: Unit (Modulus of Resilience), kJ/m3 440
31 to 280
Stiffness to Weight: Axial, points 15
7.2
Stiffness to Weight: Bending, points 70
18
Strength to Weight: Axial, points 42
7.3 to 10
Strength to Weight: Bending, points 53
9.5 to 12
Thermal Diffusivity, mm2/s 74
110
Thermal Shock Resistance, points 16
8.4 to 12

Alloy Composition

Aluminum (Al), % 2.4 to 3.6
0
Copper (Cu), % 0 to 0.1
99.395 to 99.798
Magnesium (Mg), % 93.4 to 97
0
Manganese (Mn), % 0.15 to 1.0
0
Nickel (Ni), % 0 to 0.030
0
Phosphorus (P), % 0
0.0020 to 0.0050
Silicon (Si), % 0 to 0.1
0
Sulfur (S), % 0
0.2 to 0.5
Zinc (Zn), % 0.5 to 1.5
0
Residuals, % 0
0 to 0.1