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AZ92A Magnesium vs. C90700 Bronze

AZ92A magnesium belongs to the magnesium alloys classification, while C90700 bronze belongs to the copper alloys. There are 28 material properties with values for both materials. Properties with values for just one material (4, 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 AZ92A magnesium and the bottom bar is C90700 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 47
110
Elongation at Break, % 2.1 to 6.8
12
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 18
40
Tensile Strength: Ultimate (UTS), MPa 170 to 270
330
Tensile Strength: Yield (Proof), MPa 83 to 140
180

Thermal Properties

Latent Heat of Fusion, J/g 350
190
Maximum Temperature: Mechanical, °C 130
170
Melting Completion (Liquidus), °C 590
1000
Melting Onset (Solidus), °C 440
830
Specific Heat Capacity, J/kg-K 980
370
Thermal Conductivity, W/m-K 44 to 58
71
Thermal Expansion, µm/m-K 26
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11 to 12
10
Electrical Conductivity: Equal Weight (Specific), % IACS 53 to 62
10

Otherwise Unclassified Properties

Base Metal Price, % relative 12
35
Density, g/cm3 1.8
8.7
Embodied Carbon, kg CO2/kg material 22
3.7
Embodied Energy, MJ/kg 160
60
Embodied Water, L/kg 980
390

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.0 to 14
34
Resilience: Unit (Modulus of Resilience), kJ/m3 73 to 220
150
Stiffness to Weight: Axial, points 14
6.9
Stiffness to Weight: Bending, points 67
18
Strength to Weight: Axial, points 26 to 41
10
Strength to Weight: Bending, points 38 to 51
12
Thermal Diffusivity, mm2/s 25 to 33
22
Thermal Shock Resistance, points 10 to 16
12

Alloy Composition

Aluminum (Al), % 8.3 to 9.7
0 to 0.0050
Antimony (Sb), % 0
0 to 0.2
Copper (Cu), % 0 to 0.25
88 to 90
Iron (Fe), % 0
0 to 0.15
Lead (Pb), % 0
0 to 0.5
Magnesium (Mg), % 86.7 to 90
0
Manganese (Mn), % 0.1 to 0.35
0
Nickel (Ni), % 0 to 0.010
0 to 0.5
Phosphorus (P), % 0
0 to 1.5
Silicon (Si), % 0 to 0.3
0 to 0.0050
Sulfur (S), % 0
0 to 0.050
Tin (Sn), % 0
10 to 12
Zinc (Zn), % 1.6 to 2.4
0 to 0.5
Residuals, % 0
0 to 0.6