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AZ91A Magnesium vs. C14180 Copper

AZ91A magnesium belongs to the magnesium alloys classification, while C14180 copper belongs to the copper alloys. There are 26 material properties with values for both materials. Properties with values for just one material (8, 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 AZ91A magnesium and the bottom bar is C14180 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 46
120
Elongation at Break, % 5.0
15
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 18
43
Tensile Strength: Ultimate (UTS), MPa 240
210
Tensile Strength: Yield (Proof), MPa 160
130

Thermal Properties

Latent Heat of Fusion, J/g 360
210
Maximum Temperature: Mechanical, °C 130
200
Melting Completion (Liquidus), °C 600
1080
Melting Onset (Solidus), °C 470
1080
Specific Heat Capacity, J/kg-K 990
390
Thermal Conductivity, W/m-K 73
370
Thermal Expansion, µm/m-K 26
17

Otherwise Unclassified Properties

Base Metal Price, % relative 12
31
Density, g/cm3 1.7
9.0
Embodied Carbon, kg CO2/kg material 22
2.6
Embodied Energy, MJ/kg 160
41
Embodied Water, L/kg 990
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 11
28
Resilience: Unit (Modulus of Resilience), kJ/m3 280
69
Stiffness to Weight: Axial, points 15
7.2
Stiffness to Weight: Bending, points 69
18
Strength to Weight: Axial, points 38
6.5
Strength to Weight: Bending, points 49
8.8
Thermal Diffusivity, mm2/s 42
110
Thermal Shock Resistance, points 14
7.4

Alloy Composition

Aluminum (Al), % 8.3 to 9.7
0 to 0.010
Copper (Cu), % 0 to 0.1
99.9 to 100
Lead (Pb), % 0
0 to 0.020
Magnesium (Mg), % 88.2 to 91.2
0
Manganese (Mn), % 0.13 to 0.5
0
Nickel (Ni), % 0 to 0.030
0
Phosphorus (P), % 0
0 to 0.075
Silicon (Si), % 0 to 0.5
0
Zinc (Zn), % 0.35 to 1.0
0