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AZ91A Magnesium vs. C95600 Bronze

AZ91A magnesium belongs to the magnesium alloys classification, while C95600 bronze belongs to the copper alloys. There are 28 material properties with values for both materials. Properties with values for just one material (5, 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 C95600 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 46
110
Elongation at Break, % 5.0
15
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 18
42
Tensile Strength: Ultimate (UTS), MPa 240
500
Tensile Strength: Yield (Proof), MPa 160
230

Thermal Properties

Latent Heat of Fusion, J/g 360
260
Maximum Temperature: Mechanical, °C 130
210
Melting Completion (Liquidus), °C 600
1000
Melting Onset (Solidus), °C 470
980
Specific Heat Capacity, J/kg-K 990
430
Thermal Conductivity, W/m-K 73
39
Thermal Expansion, µm/m-K 26
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 10
8.0
Electrical Conductivity: Equal Weight (Specific), % IACS 52
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 12
28
Density, g/cm3 1.7
8.3
Embodied Carbon, kg CO2/kg material 22
3.0
Embodied Energy, MJ/kg 160
50
Embodied Water, L/kg 990
360

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 11
60
Resilience: Unit (Modulus of Resilience), kJ/m3 280
230
Stiffness to Weight: Axial, points 15
7.5
Stiffness to Weight: Bending, points 69
19
Strength to Weight: Axial, points 38
17
Strength to Weight: Bending, points 49
17
Thermal Diffusivity, mm2/s 42
11
Thermal Shock Resistance, points 14
18

Alloy Composition


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Aluminum (Al), % 8.3 to 9.7
6.0 to 8.0
Copper (Cu), % 0 to 0.1
88 to 92.2
Magnesium (Mg), % 88.2 to 91.2
0
Manganese (Mn), % 0.13 to 0.5
0
Nickel (Ni), % 0 to 0.030
0 to 0.25
Silicon (Si), % 0 to 0.5
1.8 to 3.2
Zinc (Zn), % 0.35 to 1.0
0
Residuals, % 0
0 to 1.0