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AZ91B Magnesium vs. CC334G Bronze

AZ91B magnesium belongs to the magnesium alloys classification, while CC334G 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 CC334G bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 63
210
Elastic (Young's, Tensile) Modulus, GPa 46
120
Elongation at Break, % 5.0
5.6
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 18
45
Tensile Strength: Ultimate (UTS), MPa 240
810
Tensile Strength: Yield (Proof), MPa 160
410

Thermal Properties

Latent Heat of Fusion, J/g 360
240
Maximum Temperature: Mechanical, °C 130
240
Melting Completion (Liquidus), °C 600
1080
Melting Onset (Solidus), °C 470
1020
Specific Heat Capacity, J/kg-K 990
450
Thermal Conductivity, W/m-K 73
41
Thermal Expansion, µm/m-K 26
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 58
8.0

Otherwise Unclassified Properties

Base Metal Price, % relative 12
29
Density, g/cm3 1.7
8.2
Embodied Carbon, kg CO2/kg material 22
3.6
Embodied Energy, MJ/kg 160
59
Embodied Water, L/kg 990
390

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 11
38
Resilience: Unit (Modulus of Resilience), kJ/m3 280
710
Stiffness to Weight: Axial, points 15
8.1
Stiffness to Weight: Bending, points 69
20
Strength to Weight: Axial, points 38
28
Strength to Weight: Bending, points 49
24
Thermal Diffusivity, mm2/s 42
11
Thermal Shock Resistance, points 14
28

Alloy Composition

Aluminum (Al), % 8.3 to 9.7
10 to 12
Copper (Cu), % 0 to 0.35
72 to 84.5
Iron (Fe), % 0
3.0 to 7.0
Lead (Pb), % 0
0 to 0.050
Magnesium (Mg), % 87.9 to 91.2
0 to 0.050
Manganese (Mn), % 0.13 to 0.5
0 to 2.5
Nickel (Ni), % 0 to 0.030
4.0 to 7.5
Silicon (Si), % 0 to 0.5
0 to 0.1
Tin (Sn), % 0
0 to 0.2
Zinc (Zn), % 0.35 to 1.0
0 to 0.5