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AZ91D Magnesium vs. CC497K Bronze

AZ91D magnesium belongs to the magnesium alloys classification, while CC497K bronze belongs to the copper alloys. There are 29 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 AZ91D magnesium and the bottom bar is CC497K bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 60 to 80
55
Elastic (Young's, Tensile) Modulus, GPa 46
93
Elongation at Break, % 2.3 to 4.5
6.7
Poisson's Ratio 0.29
0.36
Shear Modulus, GPa 18
34
Tensile Strength: Ultimate (UTS), MPa 160 to 220
190
Tensile Strength: Yield (Proof), MPa 80 to 130
91

Thermal Properties

Latent Heat of Fusion, J/g 350
160
Maximum Temperature: Mechanical, °C 130
130
Melting Completion (Liquidus), °C 600
870
Melting Onset (Solidus), °C 490
800
Specific Heat Capacity, J/kg-K 990
330
Thermal Conductivity, W/m-K 78
53
Thermal Expansion, µm/m-K 27
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
9.0
Electrical Conductivity: Equal Weight (Specific), % IACS 58
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 12
29
Density, g/cm3 1.7
9.3
Embodied Carbon, kg CO2/kg material 22
3.0
Embodied Energy, MJ/kg 160
48
Embodied Water, L/kg 990
370

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.2 to 7.7
10
Resilience: Unit (Modulus of Resilience), kJ/m3 69 to 170
45
Stiffness to Weight: Axial, points 15
5.5
Stiffness to Weight: Bending, points 69
16
Strength to Weight: Axial, points 26 to 34
5.6
Strength to Weight: Bending, points 38 to 46
7.8
Thermal Diffusivity, mm2/s 45
17
Thermal Shock Resistance, points 9.5 to 13
7.2

Alloy Composition

Aluminum (Al), % 8.3 to 9.7
0 to 0.010
Antimony (Sb), % 0
0 to 0.75
Copper (Cu), % 0 to 0.030
67.5 to 77.5
Iron (Fe), % 0 to 0.0050
0 to 0.25
Lead (Pb), % 0
18 to 23
Magnesium (Mg), % 88.7 to 91.2
0
Manganese (Mn), % 0.15 to 0.5
0 to 0.2
Nickel (Ni), % 0 to 0.0020
0.5 to 2.5
Phosphorus (P), % 0
0 to 0.1
Silicon (Si), % 0 to 0.1
0 to 0.010
Sulfur (S), % 0
0 to 0.1
Tin (Sn), % 0
4.0 to 6.0
Zinc (Zn), % 0.35 to 1.0
0 to 2.0