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AZ91B Magnesium vs. CC330G Bronze

AZ91B magnesium belongs to the magnesium alloys classification, while CC330G bronze belongs to the copper alloys. There are 29 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 AZ91B magnesium and the bottom bar is CC330G bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 63
110
Elastic (Young's, Tensile) Modulus, GPa 46
110
Elongation at Break, % 5.0
20
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 18
42
Tensile Strength: Ultimate (UTS), MPa 240
530
Tensile Strength: Yield (Proof), MPa 160
190

Thermal Properties

Latent Heat of Fusion, J/g 360
230
Maximum Temperature: Mechanical, °C 130
220
Melting Completion (Liquidus), °C 600
1050
Melting Onset (Solidus), °C 470
1000
Specific Heat Capacity, J/kg-K 990
430
Thermal Conductivity, W/m-K 73
62
Thermal Expansion, µm/m-K 26
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
14
Electrical Conductivity: Equal Weight (Specific), % IACS 58
15

Otherwise Unclassified Properties

Base Metal Price, % relative 12
29
Density, g/cm3 1.7
8.4
Embodied Carbon, kg CO2/kg material 22
3.2
Embodied Energy, MJ/kg 160
52
Embodied Water, L/kg 990
390

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 11
82
Resilience: Unit (Modulus of Resilience), kJ/m3 280
170
Stiffness to Weight: Axial, points 15
7.5
Stiffness to Weight: Bending, points 69
19
Strength to Weight: Axial, points 38
18
Strength to Weight: Bending, points 49
17
Thermal Diffusivity, mm2/s 42
17
Thermal Shock Resistance, points 14
19

Alloy Composition

Aluminum (Al), % 8.3 to 9.7
8.0 to 10.5
Copper (Cu), % 0 to 0.35
87 to 92
Iron (Fe), % 0
0 to 1.2
Lead (Pb), % 0
0 to 0.3
Magnesium (Mg), % 87.9 to 91.2
0
Manganese (Mn), % 0.13 to 0.5
0 to 0.5
Nickel (Ni), % 0 to 0.030
0 to 1.0
Silicon (Si), % 0 to 0.5
0 to 0.2
Tin (Sn), % 0
0 to 0.3
Zinc (Zn), % 0.35 to 1.0
0 to 0.5