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ZK40A Magnesium vs. C92900 Bronze

ZK40A magnesium belongs to the magnesium alloys classification, while C92900 bronze belongs to the copper alloys. There are 28 material properties with values for both materials. Properties with values for just one material (3, 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 ZK40A magnesium and the bottom bar is C92900 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
110
Elongation at Break, % 4.2
9.1
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 17
40
Tensile Strength: Ultimate (UTS), MPa 280
350
Tensile Strength: Yield (Proof), MPa 260
190

Thermal Properties

Latent Heat of Fusion, J/g 340
190
Maximum Temperature: Mechanical, °C 120
170
Melting Completion (Liquidus), °C 600
1030
Melting Onset (Solidus), °C 540
860
Specific Heat Capacity, J/kg-K 970
370
Thermal Conductivity, W/m-K 110
58
Thermal Expansion, µm/m-K 26
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
9.0
Electrical Conductivity: Equal Weight (Specific), % IACS 130
9.2

Otherwise Unclassified Properties

Base Metal Price, % relative 13
35
Density, g/cm3 1.8
8.8
Embodied Carbon, kg CO2/kg material 24
3.8
Embodied Energy, MJ/kg 160
61
Embodied Water, L/kg 950
390

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 12
27
Resilience: Unit (Modulus of Resilience), kJ/m3 740
170
Stiffness to Weight: Axial, points 14
6.8
Stiffness to Weight: Bending, points 65
18
Strength to Weight: Axial, points 43
11
Strength to Weight: Bending, points 53
13
Thermal Diffusivity, mm2/s 62
18
Thermal Shock Resistance, points 17
13

Alloy Composition


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Aluminum (Al), % 0
0 to 0.0050
Antimony (Sb), % 0
0 to 0.25
Copper (Cu), % 0
82 to 86
Iron (Fe), % 0
0 to 0.2
Lead (Pb), % 0
2.0 to 3.2
Magnesium (Mg), % 94.2 to 96.1
0
Nickel (Ni), % 0
2.8 to 4.0
Phosphorus (P), % 0
0 to 1.5
Silicon (Si), % 0
0 to 0.0050
Sulfur (S), % 0
0 to 0.050
Tin (Sn), % 0
9.0 to 11
Zinc (Zn), % 3.5 to 4.5
0 to 0.25
Zirconium (Zr), % 0.45 to 1.0
0
Residuals, % 0 to 0.3
0 to 0.7