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AZ91D Magnesium vs. CC333G Bronze

AZ91D magnesium belongs to the magnesium alloys classification, while CC333G 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 CC333G bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 60 to 80
170
Elastic (Young's, Tensile) Modulus, GPa 46
120
Elongation at Break, % 2.3 to 4.5
13
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 18
45
Tensile Strength: Ultimate (UTS), MPa 160 to 220
710
Tensile Strength: Yield (Proof), MPa 80 to 130
310

Thermal Properties

Latent Heat of Fusion, J/g 350
230
Maximum Temperature: Mechanical, °C 130
230
Melting Completion (Liquidus), °C 600
1080
Melting Onset (Solidus), °C 490
1020
Specific Heat Capacity, J/kg-K 990
440
Thermal Conductivity, W/m-K 78
38
Thermal Expansion, µm/m-K 27
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 58
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 12
29
Density, g/cm3 1.7
8.3
Embodied Carbon, kg CO2/kg material 22
3.5
Embodied Energy, MJ/kg 160
56
Embodied Water, L/kg 990
380

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.2 to 7.7
75
Resilience: Unit (Modulus of Resilience), kJ/m3 69 to 170
410
Stiffness to Weight: Axial, points 15
8.0
Stiffness to Weight: Bending, points 69
20
Strength to Weight: Axial, points 26 to 34
24
Strength to Weight: Bending, points 38 to 46
21
Thermal Diffusivity, mm2/s 45
10
Thermal Shock Resistance, points 9.5 to 13
24

Alloy Composition

Aluminum (Al), % 8.3 to 9.7
8.5 to 10.5
Bismuth (Bi), % 0
0 to 0.010
Chromium (Cr), % 0
0 to 0.050
Copper (Cu), % 0 to 0.030
76 to 83
Iron (Fe), % 0 to 0.0050
3.0 to 5.5
Lead (Pb), % 0
0 to 0.030
Magnesium (Mg), % 88.7 to 91.2
0 to 0.050
Manganese (Mn), % 0.15 to 0.5
0 to 3.0
Nickel (Ni), % 0 to 0.0020
3.7 to 6.0
Silicon (Si), % 0 to 0.1
0 to 0.1
Tin (Sn), % 0
0 to 0.1
Zinc (Zn), % 0.35 to 1.0
0 to 0.5