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AZ91A Magnesium vs. C17000 Copper

AZ91A magnesium belongs to the magnesium alloys classification, while C17000 copper belongs to the copper alloys. There are 28 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 AZ91A magnesium and the bottom bar is C17000 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 46
120
Elongation at Break, % 5.0
1.1 to 31
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 18
45
Shear Strength, MPa 140
320 to 750
Tensile Strength: Ultimate (UTS), MPa 240
490 to 1310
Tensile Strength: Yield (Proof), MPa 160
160 to 1140

Thermal Properties

Latent Heat of Fusion, J/g 360
230
Maximum Temperature: Mechanical, °C 130
270
Melting Completion (Liquidus), °C 600
980
Melting Onset (Solidus), °C 470
870
Specific Heat Capacity, J/kg-K 990
390
Thermal Conductivity, W/m-K 73
110
Thermal Expansion, µm/m-K 26
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 10
22
Electrical Conductivity: Equal Weight (Specific), % IACS 52
22

Otherwise Unclassified Properties

Density, g/cm3 1.7
8.8
Embodied Carbon, kg CO2/kg material 22
8.7
Embodied Energy, MJ/kg 160
140
Embodied Water, L/kg 990
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 11
4.2 to 390
Resilience: Unit (Modulus of Resilience), kJ/m3 280
110 to 5420
Stiffness to Weight: Axial, points 15
7.6
Stiffness to Weight: Bending, points 69
19
Strength to Weight: Axial, points 38
15 to 41
Strength to Weight: Bending, points 49
16 to 30
Thermal Diffusivity, mm2/s 42
32
Thermal Shock Resistance, points 14
17 to 45

Alloy Composition

Aluminum (Al), % 8.3 to 9.7
0 to 0.2
Beryllium (Be), % 0
1.6 to 1.8
Copper (Cu), % 0 to 0.1
96.3 to 98.2
Iron (Fe), % 0
0 to 0.4
Magnesium (Mg), % 88.2 to 91.2
0
Manganese (Mn), % 0.13 to 0.5
0
Nickel (Ni), % 0 to 0.030
0.2 to 0.6
Silicon (Si), % 0 to 0.5
0 to 0.2
Zinc (Zn), % 0.35 to 1.0
0
Residuals, % 0
0 to 0.5